121023021312 has 54 divisors (see below), whose sum is σ = 348939212622. Its totient is φ = 40341006336.

The previous prime is 121023021269. The next prime is 121023021421. The reversal of 121023021312 is 213120320121.

121023021312 is a `hidden beast` number, since 1 + 210 + 230 + 213 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 101337808896 + 19685212416 = 318336^2 + 140304^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26261373 + ... + 26265980.

Almost surely, 2^121023021312 is an apocalyptic number.

121023021312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121023021312 is an abundant number, since it is smaller than the sum of its proper divisors (227916191310).

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

121023021312 is an equidigital number, since it uses as much as digits as its factorization.

121023021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52527375 (or 52527358 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121023021312 its reverse (213120320121), we get a palindrome (334143341433).

The spelling of 121023021312 in words is "one hundred twenty-one billion, twenty-three million, twenty-one thousand, three hundred twelve".