20011233100 has 18 divisors (see below), whose sum is σ = 43424376044. Its totient is φ = 8004493200.

The previous prime is 20011233097. The next prime is 20011233131. The reversal of 20011233100 is 133211002.

It is a super-2 number, since 2×20011233100² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100056066 + ... + 100056265.

Almost surely, 2^20011233100 is an apocalyptic number.

20011233100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011233100 is an abundant number, since it is smaller than the sum of its proper divisors (23413142944).

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

20011233100 is a wasteful number, since it uses less digits than its factorization.

20011233100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200112345 (or 200112338 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20011233100 its reverse (133211002), we get a palindrome (20144444102).

The spelling of 20011233100 in words is "twenty billion, eleven million, two hundred thirty-three thousand, one hundred".