21013303213012 has 24 divisors (see below), whose sum is σ = 40134433887072. Its totient is φ = 9547185328800.

The previous prime is 21013303212901. The next prime is 21013303213027. The reversal of 21013303213012 is 21031230331012.

It is a super-2 number, since 2×21013303213012² (a number of 27 digits) contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107804814 + ... + 107999557.

It is an arithmetic number, because the mean of its divisors is an integer number (1672268078628).

Almost surely, 2^{21013303213012} is an apocalyptic number.

21013303213012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21013303213012 is a deficient number, since it is larger than the sum of its proper divisors (19121130674060).

21013303213012 is a wasteful number, since it uses less digits than its factorization.

21013303213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215806599 (or 215806597 counting only the distinct ones).

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

Adding to 21013303213012 its reverse (21031230331012), we get a palindrome (42044533544024).

The spelling of 21013303213012 in words is "twenty-one trillion, thirteen billion, three hundred three million, two hundred thirteen thousand, twelve".