121201313112 has 48 divisors (see below), whose sum is σ = 358094791080. Its totient is φ = 36727670400.

The previous prime is 121201313099. The next prime is 121201313113. The reversal of 121201313112 is 211313102121.

121201313112 is a `hidden beast` number, since 121 + 201 + 31 + 311 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201313113) 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, 76515189 + ... + 76516772.

Almost surely, 2^121201313112 is an apocalyptic number.

121201313112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121201313112 is an abundant number, since it is smaller than the sum of its proper divisors (236893477968).

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

121201313112 is a wasteful number, since it uses less digits than its factorization.

121201313112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153031984 (or 153031977 counting only the distinct ones).

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

Adding to 121201313112 its reverse (211313102121), we get a palindrome (332514415233).

The spelling of 121201313112 in words is "one hundred twenty-one billion, two hundred one million, three hundred thirteen thousand, one hundred twelve".