221432144775126 has 32 divisors (see below), whose sum is σ = 452288212646400. Its totient is φ = 72240069955296.

The previous prime is 221432144775109. The next prime is 221432144775253. The reversal of 221432144775126 is 621577441234122.

It is a super-2 number, since 2×221432144775126² (a number of 29 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, 123629925 + ... + 125408223.

It is an arithmetic number, because the mean of its divisors is an integer number (14134006645200).

Almost surely, 2^{221432144775126} is an apocalyptic number.

221432144775126 is an abundant number, since it is smaller than the sum of its proper divisors (230856067871274).

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

221432144775126 is a wasteful number, since it uses less digits than its factorization.

221432144775126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219908.

The product of its digits is 4515840, while the sum is 51.

The spelling of 221432144775126 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, one hundred forty-four million, seven hundred seventy-five thousand, one hundred twenty-six".