221422056536436 has 24 divisors (see below), whose sum is σ = 590458817430720. Its totient is φ = 63263444724672.

The previous prime is 221422056536431. The next prime is 221422056536537. The reversal of 221422056536436 is 634635650224122.

221422056536436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422056536431) 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, 1317988431681 + ... + 1317988431848.

It is an arithmetic number, because the mean of its divisors is an integer number (24602450726280).

Almost surely, 2^{221422056536436} is an apocalyptic number.

It is an amenable number.

221422056536436 is an abundant number, since it is smaller than the sum of its proper divisors (369036760894284).

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

221422056536436 is a wasteful number, since it uses less digits than its factorization.

221422056536436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635976863543 (or 2635976863541 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 51.

The spelling of 221422056536436 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, fifty-six million, five hundred thirty-six thousand, four hundred thirty-six".