20022022100 has 72 divisors (see below), whose sum is σ = 45552792768. Its totient is φ = 7624108800.

The previous prime is 20022022099. The next prime is 20022022109. The reversal of 20022022100 is 122022002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022022109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464672 + ... + 505928.

Almost surely, 2^20022022100 is an apocalyptic number.

20022022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20022022100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22776396384).

20022022100 is an abundant number, since it is smaller than the sum of its proper divisors (25530770668).

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

20022022100 is a wasteful number, since it uses less digits than its factorization.

20022022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41505 (or 41498 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20022022100 its reverse (122022002), we get a palindrome (20144044102).

The spelling of 20022022100 in words is "twenty billion, twenty-two million, twenty-two thousand, one hundred".