222221303131 has 4 divisors (see below), whose sum is σ = 222222828592. Its totient is φ = 222219777672.

The previous prime is 222221303111. The next prime is 222221303149. The reversal of 222221303131 is 131303122222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131303122222 = 2 ⋅65651561111.

It is a cyclic number.

It is not a de Polignac number, because 222221303131 - 2²⁷ = 222087085403 is a prime.

It is a super-2 number, since 2×222221303131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221303111) 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, 518055 + ... + 844288.

It is an arithmetic number, because the mean of its divisors is an integer number (55555707148).

Almost surely, 2^222221303131 is an apocalyptic number.

222221303131 is a deficient number, since it is larger than the sum of its proper divisors (1525461).

222221303131 is a wasteful number, since it uses less digits than its factorization.

222221303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525460.

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

Adding to 222221303131 its reverse (131303122222), we get a palindrome (353524425353).

The spelling of 222221303131 in words is "two hundred twenty-two billion, two hundred twenty-one million, three hundred three thousand, one hundred thirty-one".