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120031122211 = 72111326936361
BaseRepresentation
bin110111111001001101…
…0011001001100100011
3102110211011201210010221
41233302122121030203
53431310431402321
6131050323303511
711446324463500
oct1576232311443
9373734653127
10120031122211
11469a5491760
121b31a21ab97
13b41b793090
145b495284a7
1531c7aa1e41
hex1bf2699323

120031122211 has 48 divisors (see below), whose sum is σ = 164125247328. Its totient is φ = 86290444800.

The previous prime is 120031122193. The next prime is 120031122241. The reversal of 120031122211 is 112221130021.

It is not a de Polignac number, because 120031122211 - 25 = 120031122179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120031122241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18866671 + ... + 18873031.

It is an arithmetic number, because the mean of its divisors is an integer number (3419275986).

Almost surely, 2120031122211 is an apocalyptic number.

120031122211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120031122211 is a deficient number, since it is larger than the sum of its proper divisors (44094125117).

120031122211 is a wasteful number, since it uses less digits than its factorization.

120031122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092 (or 9085 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 120031122211 its reverse (112221130021), we get a palindrome (232252252232).

It can be divided in two parts, 120031 and 122211, that added together give a palindrome (242242).

The spelling of 120031122211 in words is "one hundred twenty billion, thirty-one million, one hundred twenty-two thousand, two hundred eleven".

Divisors: 1 7 11 13 49 77 91 143 539 637 1001 2693 6361 7007 18851 29623 35009 44527 69971 82693 131957 207361 245063 311689 385099 489797 578851 909623 1451527 1715441 2695693 3428579 4051957 6367361 17130173 18869851 44571527 119911211 188431903 222692249 839378477 1319023321 1558845743 2449614739 9233163247 10911920201 17147303173 120031122211