21203301100 has 36 divisors (see below), whose sum is σ = 46765458208. Its totient is φ = 8342280000.

The previous prime is 21203301089. The next prime is 21203301103. The reversal of 21203301100 is 110330212.

It is a super-2 number, since 2×21203301100² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21203301103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1731876 + ... + 1744075.

Almost surely, 2^21203301100 is an apocalyptic number.

21203301100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21203301100 is an abundant number, since it is smaller than the sum of its proper divisors (25562157108).

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

21203301100 is a wasteful number, since it uses less digits than its factorization.

21203301100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476026 (or 3476019 counting only the distinct ones).

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

Adding to 21203301100 its reverse (110330212), we get a palindrome (21313631312).

The spelling of 21203301100 in words is "twenty-one billion, two hundred three million, three hundred one thousand, one hundred".