221422645217131 has 4 divisors (see below), whose sum is σ = 221603693987952. Its totient is φ = 221241596446312.

The previous prime is 221422645217113. The next prime is 221422645217149. The reversal of 221422645217131 is 131712546224122.

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

It is an interprime number because it is at equal distance from previous prime (221422645217113) and next prime (221422645217149).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221422645217131 is a prime.

It is a super-2 number, since 2×221422645217131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221422645217731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90524383576 + ... + 90524386021.

It is an arithmetic number, because the mean of its divisors is an integer number (55400923496988).

Almost surely, 2^{221422645217131} is an apocalyptic number.

221422645217131 is a deficient number, since it is larger than the sum of its proper divisors (181048770821).

221422645217131 is a wasteful number, since it uses less digits than its factorization.

221422645217131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181048770820.

The product of its digits is 322560, while the sum is 43.

The spelling of 221422645217131 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, six hundred forty-five million, two hundred seventeen thousand, one hundred thirty-one".