121113310212 has 84 divisors (see below), whose sum is σ = 334502332080. Its totient is φ = 38246290992.

The previous prime is 121113310181. The next prime is 121113310223. The reversal of 121113310212 is 212013311121.

121113310212 is a `hidden beast` number, since 12 + 111 + 331 + 0 + 212 = 666.

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 27 ways as a sum of consecutive naturals, for example, 1037598 + ... + 1148405.

It is an arithmetic number, because the mean of its divisors is an integer number (3982170620).

Almost surely, 2^121113310212 is an apocalyptic number.

121113310212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121113310212 is an abundant number, since it is smaller than the sum of its proper divisors (213389021868).

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

121113310212 is a wasteful number, since it uses less digits than its factorization.

121113310212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186044 (or 2186027 counting only the distinct ones).

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

Adding to 121113310212 its reverse (212013311121), we get a palindrome (333126621333).

Subtracting 121113310212 from its reverse (212013311121), we obtain a palindrome (90900000909).

The spelling of 121113310212 in words is "one hundred twenty-one billion, one hundred thirteen million, three hundred ten thousand, two hundred twelve".