121232110212 has 24 divisors (see below), whose sum is σ = 314305471200. Its totient is φ = 40410703368.

The previous prime is 121232110189. The next prime is 121232110231. The reversal of 121232110212 is 212011232121.

121232110212 is a `hidden beast` number, since 121 + 2 + 321 + 10 + 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 7 ways as a sum of consecutive naturals, for example, 561259662 + ... + 561259877.

It is an arithmetic number, because the mean of its divisors is an integer number (13096061300).

Almost surely, 2^121232110212 is an apocalyptic number.

121232110212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121232110212 is an abundant number, since it is smaller than the sum of its proper divisors (193073360988).

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

121232110212 is a wasteful number, since it uses less digits than its factorization.

121232110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122519552 (or 1122519544 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121232110212 its reverse (212011232121), we get a palindrome (333243342333).

The spelling of 121232110212 in words is "one hundred twenty-one billion, two hundred thirty-two million, one hundred ten thousand, two hundred twelve".