121031302312 has 16 divisors (see below), whose sum is σ = 227120179860. Its totient is φ = 60465921024.

The previous prime is 121031302309. The next prime is 121031302313. The reversal of 121031302312 is 213203130121.

It can be written as a sum of positive squares in 2 ways, for example, as 113923800676 + 7107501636 = 337526^2 + 84306^2 .

It is a super-2 number, since 2×121031302312² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121031302312.

It is not an unprimeable number, because it can be changed into a prime (121031302313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6205923 + ... + 6225394.

Almost surely, 2^121031302312 is an apocalyptic number.

It is an amenable number.

121031302312 is a deficient number, since it is larger than the sum of its proper divisors (106088877548).

121031302312 is a wasteful number, since it uses less digits than its factorization.

121031302312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12432540 (or 12432536 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121031302312 its reverse (213203130121), we get a palindrome (334234432433).

The spelling of 121031302312 in words is "one hundred twenty-one billion, thirty-one million, three hundred two thousand, three hundred twelve".