22012000002221 has 4 divisors (see below), whose sum is σ = 22012106646432. Its totient is φ = 22011893358012.

The previous prime is 22012000002217. The next prime is 22012000002229. The reversal of 22012000002221 is 12220000021022.

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 22012000002221 - 2² = 22012000002217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22012000002196 and 22012000002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012000002229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53011895 + ... + 53425508.

It is an arithmetic number, because the mean of its divisors is an integer number (5503026661608).

Almost surely, 2^{22012000002221} is an apocalyptic number.

It is an amenable number.

22012000002221 is a deficient number, since it is larger than the sum of its proper divisors (106644211).

22012000002221 is a wasteful number, since it uses less digits than its factorization.

22012000002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106644210.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22012000002221 its reverse (12220000021022), we get a palindrome (34232000023243).

The spelling of 22012000002221 in words is "twenty-two trillion, twelve billion, two thousand, two hundred twenty-one".