121201331412 has 96 divisors (see below), whose sum is σ = 324596772864. Its totient is φ = 34479936000.

The previous prime is 121201331401. The next prime is 121201331429. The reversal of 121201331412 is 214133102121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31372993 + ... + 31376855.

It is an arithmetic number, because the mean of its divisors is an integer number (3381216384).

Almost surely, 2^121201331412 is an apocalyptic number.

121201331412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121201331412 is an abundant number, since it is smaller than the sum of its proper divisors (203395441452).

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

121201331412 is a wasteful number, since it uses less digits than its factorization.

121201331412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389 (or 5387 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121201331412 its reverse (214133102121), we get a palindrome (335334433533).

The spelling of 121201331412 in words is "one hundred twenty-one billion, two hundred one million, three hundred thirty-one thousand, four hundred twelve".