121012310331 has 24 divisors (see below), whose sum is σ = 198976766976. Its totient is φ = 70152062640.

The previous prime is 121012310311. The next prime is 121012310357. The reversal of 121012310331 is 133013210121.

121012310331 is a `hidden beast` number, since 1 + 2 + 10 + 12 + 310 + 331 = 666.

It is not a de Polignac number, because 121012310331 - 2⁶ = 121012310267 is a prime.

It is a super-2 number, since 2×121012310331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121012310311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26570475 + ... + 26575028.

It is an arithmetic number, because the mean of its divisors is an integer number (8290698624).

Almost surely, 2^121012310331 is an apocalyptic number.

121012310331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121012310331 is a deficient number, since it is larger than the sum of its proper divisors (77964456645).

121012310331 is a wasteful number, since it uses less digits than its factorization.

121012310331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53145543 (or 53145540 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121012310331 its reverse (133013210121), we get a palindrome (254025520452).

The spelling of 121012310331 in words is "one hundred twenty-one billion, twelve million, three hundred ten thousand, three hundred thirty-one".