20221220022 has 32 divisors (see below), whose sum is σ = 43154171520. Its totient is φ = 6298171200.

The previous prime is 20221219979. The next prime is 20221220023. The reversal of 20221220022 is 22002212202.

It is a super-4 number, since 4×20221220022⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20221219983 and 20221220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221220023) 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, 1206604 + ... + 1223247.

It is an arithmetic number, because the mean of its divisors is an integer number (1348567860).

Almost surely, 2^20221220022 is an apocalyptic number.

20221220022 is an abundant number, since it is smaller than the sum of its proper divisors (22932951498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20221220022 is a wasteful number, since it uses less digits than its factorization.

20221220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429948.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20221220022 its reverse (22002212202), we get a palindrome (42223432224).

The spelling of 20221220022 in words is "twenty billion, two hundred twenty-one million, two hundred twenty thousand, twenty-two".