21003312133012 has 48 divisors (see below), whose sum is σ = 42971417016192. Its totient is φ = 8885067396480.

The previous prime is 21003312133007. The next prime is 21003312133019. The reversal of 21003312133012 is 21033121330012.

It is a super-2 number, since 2×21003312133012² (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 not an unprimeable number, because it can be changed into a prime (21003312133019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280425543 + ... + 280500430.

It is an arithmetic number, because the mean of its divisors is an integer number (895237854504).

Almost surely, 2^{21003312133012} is an apocalyptic number.

21003312133012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21003312133012 is an abundant number, since it is smaller than the sum of its proper divisors (21968104883180).

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

21003312133012 is a wasteful number, since it uses less digits than its factorization.

21003312133012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560926048 (or 560926046 counting only the distinct ones).

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

Adding to 21003312133012 its reverse (21033121330012), we get a palindrome (42036433463024).

The spelling of 21003312133012 in words is "twenty-one trillion, three billion, three hundred twelve million, one hundred thirty-three thousand, twelve".