21103333021012 has 48 divisors (see below), whose sum is σ = 42450231398400. Its totient is φ = 9078641192160.

The previous prime is 21103333020983. The next prime is 21103333021051. The reversal of 21103333021012 is 21012033330112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11534388 + ... + 13238155.

It is an arithmetic number, because the mean of its divisors is an integer number (884379820800).

Almost surely, 2^{21103333021012} is an apocalyptic number.

21103333021012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21103333021012 is an abundant number, since it is smaller than the sum of its proper divisors (21346898377388).

21103333021012 is a wasteful number, since it uses less digits than its factorization.

21103333021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24773596 (or 24773594 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21103333021012 its reverse (21012033330112), we get a palindrome (42115366351124).

The spelling of 21103333021012 in words is "twenty-one trillion, one hundred three billion, three hundred thirty-three million, twenty-one thousand, twelve".