421121015412 has 24 divisors (see below), whose sum is σ = 1040416626816. Its totient is φ = 132116396928.

The previous prime is 421121015387. The next prime is 421121015417. The reversal of 421121015412 is 214510121124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421121015417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032159148 + ... + 1032159555.

It is an arithmetic number, because the mean of its divisors is an integer number (43350692784).

Almost surely, 2^421121015412 is an apocalyptic number.

It is an amenable number.

421121015412 is an abundant number, since it is smaller than the sum of its proper divisors (619295611404).

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

421121015412 is a wasteful number, since it uses less digits than its factorization.

421121015412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064318727 (or 2064318725 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 421121015412 its reverse (214510121124), we get a palindrome (635631136536).

The spelling of 421121015412 in words is "four hundred twenty-one billion, one hundred twenty-one million, fifteen thousand, four hundred twelve".