121310221311000 has 192 divisors, whose sum is σ = 413257123169280. Its totient is φ = 32094672422400.

The previous prime is 121310221310989. The next prime is 121310221311047. The reversal of 121310221311000 is 113122013121.

121310221311000 is a `hidden beast` number, since 1 + 2 + 1 + 310 + 221 + 31 + 100 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51923589 + ... + 54209588.

It is an arithmetic number, because the mean of its divisors is an integer number (2152380849840).

Almost surely, 2^{121310221311000} is an apocalyptic number.

121310221311000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121310221311000 is an abundant number, since it is smaller than the sum of its proper divisors (291946901858280).

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

121310221311000 is a wasteful number, since it uses less digits than its factorization.

121310221311000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106133331 (or 106133314 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121310221311000 its reverse (113122013121), we get a palindrome (121423343324121).

The spelling of 121310221311000 in words is "one hundred twenty-one trillion, three hundred ten billion, two hundred twenty-one million, three hundred eleven thousand".