121030302312 has 48 divisors (see below), whose sum is σ = 327806764740. Its totient is φ = 40341420288.

The previous prime is 121030302307. The next prime is 121030302317. The reversal of 121030302312 is 213203030121.

121030302312 is a `hidden beast` number, since 1 + 21 + 0 + 30 + 302 + 312 = 666.

It is an interprime number because it is at equal distance from previous prime (121030302307) and next prime (121030302317).

It can be written as a sum of positive squares in 2 ways, for example, as 119941698276 + 1088604036 = 346326^2 + 32994^2 .

It is a super-2 number, since 2×121030302312² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121030302317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2354388 + ... + 2405244.

Almost surely, 2^121030302312 is an apocalyptic number.

121030302312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121030302312 is an abundant number, since it is smaller than the sum of its proper divisors (206776462428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121030302312 is a wasteful number, since it uses less digits than its factorization.

121030302312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83922 (or 83915 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121030302312 its reverse (213203030121), we get a palindrome (334233332433).

The spelling of 121030302312 in words is "one hundred twenty-one billion, thirty million, three hundred two thousand, three hundred twelve".