22012210101221 has 4 divisors (see below), whose sum is σ = 22039352161344. Its totient is φ = 21985068041100.

The previous prime is 22012210101109. The next prime is 22012210101263. The reversal of 22012210101221 is 12210101221022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22012210101221 - 2²² = 22012205906917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22012210101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012210101521) 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, 13571028845 + ... + 13571030466.

It is an arithmetic number, because the mean of its divisors is an integer number (5509838040336).

Almost surely, 2^{22012210101221} is an apocalyptic number.

It is an amenable number.

22012210101221 is a deficient number, since it is larger than the sum of its proper divisors (27142060123).

22012210101221 is an equidigital number, since it uses as much as digits as its factorization.

22012210101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27142060122.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22012210101221 its reverse (12210101221022), we get a palindrome (34222311322243).

The spelling of 22012210101221 in words is "twenty-two trillion, twelve billion, two hundred ten million, one hundred one thousand, two hundred twenty-one".