21023100020133 has 40 divisors (see below), whose sum is σ = 31732761994560. Its totient is φ = 13869667618560.

The previous prime is 21023100020123. The next prime is 21023100020177. The reversal of 21023100020133 is 33102000132012.

It is not a de Polignac number, because 21023100020133 - 2³⁴ = 21005920150949 is a prime.

It is a super-2 number, since 2×21023100020133² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023100020123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1049941 + ... + 6568757.

It is an arithmetic number, because the mean of its divisors is an integer number (793319049864).

Almost surely, 2^{21023100020133} is an apocalyptic number.

It is an amenable number.

21023100020133 is a deficient number, since it is larger than the sum of its proper divisors (10709661974427).

21023100020133 is a wasteful number, since it uses less digits than its factorization.

21023100020133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519319 (or 5519310 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21023100020133 its reverse (33102000132012), we get a palindrome (54125100152145).

The spelling of 21023100020133 in words is "twenty-one trillion, twenty-three billion, one hundred million, twenty thousand, one hundred thirty-three".