20220002100 has 216 divisors, whose sum is σ = 65096041920. Its totient is φ = 5247728640.

The previous prime is 20220002081. The next prime is 20220002129. The reversal of 20220002100 is 120002202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5467452 + ... + 5471148.

Almost surely, 2^20220002100 is an apocalyptic number.

20220002100 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 20220002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32548020960).

20220002100 is an abundant number, since it is smaller than the sum of its proper divisors (44876039820).

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

20220002100 is a wasteful number, since it uses less digits than its factorization.

20220002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3879 (or 3869 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20220002100 its reverse (120002202), we get a palindrome (20340004302).

The spelling of 20220002100 in words is "twenty billion, two hundred twenty million, two thousand, one hundred".