20220221020 has 48 divisors (see below), whose sum is σ = 43627106880. Its totient is φ = 7866422784.

The previous prime is 20220221009. The next prime is 20220221023. The reversal of 20220221020 is 2012202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220221023) 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, 3176601 + ... + 3182959.

It is an arithmetic number, because the mean of its divisors is an integer number (908898060).

Almost surely, 2^20220221020 is an apocalyptic number.

20220221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220221020 is an abundant number, since it is smaller than the sum of its proper divisors (23406885860).

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

20220221020 is a wasteful number, since it uses less digits than its factorization.

20220221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10702 (or 10700 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20220221020 its reverse (2012202202), we get a palindrome (22232423222).

The spelling of 20220221020 in words is "twenty billion, two hundred twenty million, two hundred twenty-one thousand, twenty".