22220544502221 has 32 divisors (see below), whose sum is σ = 32087607293952. Its totient is φ = 13596593879040.

The previous prime is 22220544502217. The next prime is 22220544502243. The reversal of 22220544502221 is 12220544502222.

It is not a de Polignac number, because 22220544502221 - 2² = 22220544502217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220544509221) 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, 16275391 + ... + 17587763.

It is an arithmetic number, because the mean of its divisors is an integer number (1002737727936).

Almost surely, 2^{22220544502221} is an apocalyptic number.

It is an amenable number.

22220544502221 is a deficient number, since it is larger than the sum of its proper divisors (9867062791731).

22220544502221 is a wasteful number, since it uses less digits than its factorization.

22220544502221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314853.

The product of its (nonzero) digits is 51200, while the sum is 33.

Subtracting from 22220544502221 its reverse (12220544502222), we obtain a palindrome (9999999999999).

The spelling of 22220544502221 in words is "twenty-two trillion, two hundred twenty billion, five hundred forty-four million, five hundred two thousand, two hundred twenty-one".