121567200412 has 48 divisors (see below), whose sum is σ = 252231456960. Its totient is φ = 50161047552.

The previous prime is 121567200397. The next prime is 121567200421. The reversal of 121567200412 is 214002765121.

121567200412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121567200412² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74578 + ... + 498694.

It is an arithmetic number, because the mean of its divisors is an integer number (5254822020).

Almost surely, 2^121567200412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121567200412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126115728480).

121567200412 is an abundant number, since it is smaller than the sum of its proper divisors (130664256548).

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

121567200412 is a wasteful number, since it uses less digits than its factorization.

121567200412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424510 (or 424508 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 121567200412 its reverse (214002765121), we get a palindrome (335569965533).

The spelling of 121567200412 in words is "one hundred twenty-one billion, five hundred sixty-seven million, two hundred thousand, four hundred twelve".