20200001100 has 72 divisors (see below), whose sum is σ = 59435987520. Its totient is φ = 5295362880.

The previous prime is 20200001089. The next prime is 20200001113. The reversal of 20200001100 is 110000202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 552922 + ... + 588321.

Almost surely, 2^20200001100 is an apocalyptic number.

20200001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200001100 is an abundant number, since it is smaller than the sum of its proper divisors (39235986420).

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

20200001100 is a wasteful number, since it uses less digits than its factorization.

20200001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141319 (or 1141312 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 20200001100 its reverse (110000202), we get a palindrome (20310001302).

The spelling of 20200001100 in words is "twenty billion, two hundred million, one thousand, one hundred".