22020120221 has 16 divisors (see below), whose sum is σ = 24338016000. Its totient is φ = 19755153600.

The previous prime is 22020120163. The next prime is 22020120257. The reversal of 22020120221 is 12202102022.

It is a cyclic number.

It is not a de Polignac number, because 22020120221 - 2²⁶ = 21953011357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020120196 and 22020120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020120271) 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, 2210111 + ... + 2220051.

It is an arithmetic number, because the mean of its divisors is an integer number (1521126000).

Almost surely, 2^22020120221 is an apocalyptic number.

It is an amenable number.

22020120221 is a deficient number, since it is larger than the sum of its proper divisors (2317895779).

22020120221 is a wasteful number, since it uses less digits than its factorization.

22020120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12580.

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

Adding to 22020120221 its reverse (12202102022), we get a palindrome (34222222243).

It can be divided in two parts, 22020 and 120221, that added together give a palindrome (142241).

The spelling of 22020120221 in words is "twenty-two billion, twenty million, one hundred twenty thousand, two hundred twenty-one".