Search a number
-
+
120012110221 = 641677276553
BaseRepresentation
bin110111111000101000…
…1110111100110001101
3102110202211221212121011
41233301101313212031
53431241100011341
6131044404005221
711446004051113
oct1576121674615
9373684855534
10120012110221
1146995786773
121b313990811
13b417867593
145b46bb9ab3
1531c6098b81
hex1bf147798d

120012110221 has 8 divisors (see below), whose sum is σ = 120377318904. Its totient is φ = 119647457280.

The previous prime is 120012110209. The next prime is 120012110261. The reversal of 120012110221 is 122011210021.

It can be written as a sum of positive squares in 4 ways, for example, as 81331054596 + 38681055625 = 285186^2 + 196675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120012110221 - 213 = 120012102029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012110261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295681 + ... + 572233.

It is an arithmetic number, because the mean of its divisors is an integer number (15047164863).

Almost surely, 2120012110221 is an apocalyptic number.

It is an amenable number.

120012110221 is a deficient number, since it is larger than the sum of its proper divisors (365208683).

120012110221 is an equidigital number, since it uses as much as digits as its factorization.

120012110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277871.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120012110221 its reverse (122011210021), we get a palindrome (242023320242).

The spelling of 120012110221 in words is "one hundred twenty billion, twelve million, one hundred ten thousand, two hundred twenty-one".

Divisors: 1 641 677 276553 433957 177270473 187226381 120012110221