221432271532634 has 4 divisors (see below), whose sum is σ = 332148407298954. Its totient is φ = 110716135766316.

The previous prime is 221432271532627. The next prime is 221432271532699. The reversal of 221432271532634 is 436235172234122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 221314625962609 + 117645570025 = 14876647^2 + 342995^2 .

It is a super-2 number, since 2×221432271532634² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55358067883157 + ... + 55358067883160.

Almost surely, 2^{221432271532634} is an apocalyptic number.

221432271532634 is a deficient number, since it is larger than the sum of its proper divisors (110716135766320).

221432271532634 is a wasteful number, since it uses less digits than its factorization.

221432271532634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110716135766319.

The product of its digits is 2903040, while the sum is 47.

The spelling of 221432271532634 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, two hundred seventy-one million, five hundred thirty-two thousand, six hundred thirty-four".