22010010121221 has 32 divisors (see below), whose sum is σ = 31366673694720. Its totient is φ = 13697782526400.

The previous prime is 22010010121219. The next prime is 22010010121241. The reversal of 22010010121221 is 12212101001022.

It is not a de Polignac number, because 22010010121221 - 2¹ = 22010010121219 is a prime.

It is a super-2 number, since 2×22010010121221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22010010121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010010121241) 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, 797685 + ... + 6682538.

It is an arithmetic number, because the mean of its divisors is an integer number (980208552960).

Almost surely, 2^{22010010121221} is an apocalyptic number.

It is an amenable number.

22010010121221 is a deficient number, since it is larger than the sum of its proper divisors (9356663573499).

22010010121221 is a wasteful number, since it uses less digits than its factorization.

22010010121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7481377.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22010010121221 its reverse (12212101001022), we get a palindrome (34222111122243).

The spelling of 22010010121221 in words is "twenty-two trillion, ten billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".