421311252221256 has 32 divisors (see below), whose sum is σ = 1053287474976000. Its totient is φ = 140435838150720.

The previous prime is 421311252221219. The next prime is 421311252221351. The reversal of 421311252221256 is 652122252113124.

It is a happy number.

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, 75106615 + ... + 80520966.

It is an arithmetic number, because the mean of its divisors is an integer number (32915233593000).

Almost surely, 2^{421311252221256} is an apocalyptic number.

It is an amenable number.

421311252221256 is an abundant number, since it is smaller than the sum of its proper divisors (631976222754744).

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

421311252221256 is a wasteful number, since it uses less digits than its factorization.

421311252221256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155740389 (or 155740385 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The spelling of 421311252221256 in words is "four hundred twenty-one trillion, three hundred eleven billion, two hundred fifty-two million, two hundred twenty-one thousand, two hundred fifty-six".