21102001101100 has 36 divisors (see below), whose sum is σ = 48201413045800. Its totient is φ = 7996547784960.

The previous prime is 21102001101059. The next prime is 21102001101143. The reversal of 21102001101100 is 110110020112.

21102001101100 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21102001101100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5553156285 + ... + 5553160084.

Almost surely, 2^{21102001101100} is an apocalyptic number.

21102001101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21102001101100 is an abundant number, since it is smaller than the sum of its proper divisors (27099411944700).

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

21102001101100 is a wasteful number, since it uses less digits than its factorization.

21102001101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11106316402 (or 11106316395 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21102001101100 its reverse (110110020112), we get a palindrome (21212111121212).

The spelling of 21102001101100 in words is "twenty-one trillion, one hundred two billion, one million, one hundred one thousand, one hundred".