221602631430631 has 8 divisors (see below), whose sum is σ = 245845754438400. Its totient is φ = 198042413296440.

The previous prime is 221602631430601. The next prime is 221602631430641. The reversal of 221602631430631 is 136034136206122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221602631430631 - 2⁹ = 221602631430119 is a prime.

It is a super-2 number, since 2×221602631430631² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221602631430601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170726217711 + ... + 170726219008.

It is an arithmetic number, because the mean of its divisors is an integer number (30730719304800).

Almost surely, 2^{221602631430631} is an apocalyptic number.

221602631430631 is a deficient number, since it is larger than the sum of its proper divisors (24243123007769).

221602631430631 is a wasteful number, since it uses less digits than its factorization.

221602631430631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341452436789.

The product of its (nonzero) digits is 186624, while the sum is 40.

Adding to 221602631430631 its reverse (136034136206122), we get a palindrome (357636767636753).

The spelling of 221602631430631 in words is "two hundred twenty-one trillion, six hundred two billion, six hundred thirty-one million, four hundred thirty thousand, six hundred thirty-one".