221322302131 has 32 divisors (see below), whose sum is σ = 262377492480. Its totient is φ = 182688307200.

The previous prime is 221322302077. The next prime is 221322302137. The reversal of 221322302131 is 131203223122.

It is not a de Polignac number, because 221322302131 - 2⁹ = 221322301619 is a prime.

It is a super-2 number, since 2×221322302131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221322302137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56645680 + ... + 56649586.

It is an arithmetic number, because the mean of its divisors is an integer number (8199296640).

Almost surely, 2^221322302131 is an apocalyptic number.

221322302131 is a deficient number, since it is larger than the sum of its proper divisors (41055190349).

221322302131 is a wasteful number, since it uses less digits than its factorization.

221322302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221322302131 its reverse (131203223122), we get a palindrome (352525525253).

The spelling of 221322302131 in words is "two hundred twenty-one billion, three hundred twenty-two million, three hundred two thousand, one hundred thirty-one".