20102122200 has 144 divisors (see below), whose sum is σ = 64048947480. Its totient is φ = 5215472640.

The previous prime is 20102122177. The next prime is 20102122211. The reversal of 20102122200 is 222120102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 809164 + ... + 833636.

Almost surely, 2^20102122200 is an apocalyptic number.

20102122200 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 20102122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32024473740).

20102122200 is an abundant number, since it is smaller than the sum of its proper divisors (43946825280).

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

20102122200 is a wasteful number, since it uses less digits than its factorization.

20102122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24566 (or 24520 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20102122200 its reverse (222120102), we get a palindrome (20324242302).

The spelling of 20102122200 in words is "twenty billion, one hundred two million, one hundred twenty-two thousand, two hundred".