222221012012210 has 8 divisors (see below), whose sum is σ = 399997821621996. Its totient is φ = 88888404804880.

The previous prime is 222221012012201. The next prime is 222221012012281. The reversal of 222221012012210 is 12210210122222.

It can be written as a sum of positive squares in 2 ways, for example, as 218770397410321 + 3450614601889 = 14790889^2 + 1857583^2 .

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

It is a super-2 number, since 2×222221012012210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11111050600601 + ... + 11111050600620.

Almost surely, 2^{222221012012210} is an apocalyptic number.

222221012012210 is a deficient number, since it is larger than the sum of its proper divisors (177776809609786).

222221012012210 is a wasteful number, since it uses less digits than its factorization.

222221012012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222101201228.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222221012012210 its reverse (12210210122222), we get a palindrome (234431222134432).

The spelling of 222221012012210 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, twelve million, twelve thousand, two hundred ten".