22221211221010 has 32 divisors (see below), whose sum is σ = 40067941327920. Its totient is φ = 8872983748608.

The previous prime is 22221211220947. The next prime is 22221211221017. The reversal of 22221211221010 is 1012211212222.

It can be written as a sum of positive squares in 8 ways, for example, as 2941111811089 + 19280099409921 = 1714967^2 + 4390911^2 .

It is not an unprimeable number, because it can be changed into a prime (22221211221017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112648546 + ... + 112845634.

Almost surely, 2^{22221211221010} is an apocalyptic number.

22221211221010 is a deficient number, since it is larger than the sum of its proper divisors (17846730106910).

22221211221010 is a wasteful number, since it uses less digits than its factorization.

22221211221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216702.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22221211221010 its reverse (1012211212222), we get a palindrome (23233422433232).

The spelling of 22221211221010 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty-one thousand, ten".