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121022310031 = 777339223547
BaseRepresentation
bin111000010110101111…
…1011110011010001111
3102120101020211100012221
41300231133132122033
53440323202410111
6131332532040211
711513021443060
oct1605537363217
9376336740187
10121022310031
1147363a36847
121b556163067
13b548c3624c
145c01020567
153234ae2371
hex1c2d7de68f

121022310031 has 8 divisors (see below), whose sum is σ = 138313618560. Its totient is φ = 103731603288.

The previous prime is 121022310029. The next prime is 121022310067. The reversal of 121022310031 is 130013220121.

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 121022310031 - 21 = 121022310029 is a prime.

It is a super-2 number, since 2×1210223100312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121022309987 and 121022310014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022310011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429600 + ... + 653146.

It is an arithmetic number, because the mean of its divisors is an integer number (17289202320).

Almost surely, 2121022310031 is an apocalyptic number.

121022310031 is a deficient number, since it is larger than the sum of its proper divisors (17291308529).

121022310031 is an equidigital number, since it uses as much as digits as its factorization.

121022310031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300893.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121022310031 its reverse (130013220121), we get a palindrome (251035530152).

The spelling of 121022310031 in words is "one hundred twenty-one billion, twenty-two million, three hundred ten thousand, thirty-one".

Divisors: 1 7 77339 223547 541373 1564829 17288901433 121022310031