21000323013033 has 32 divisors (see below), whose sum is σ = 35046171417600. Its totient is φ = 10889346102336.

The previous prime is 21000323012983. The next prime is 21000323013083. The reversal of 21000323013033 is 33031032300012.

It is an interprime number because it is at equal distance from previous prime (21000323012983) and next prime (21000323013083).

It is not a de Polignac number, because 21000323013033 - 2⁹ = 21000323012521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21000323013083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651884403 + ... + 651916616.

It is an arithmetic number, because the mean of its divisors is an integer number (1095192856800).

Almost surely, 2^{21000323013033} is an apocalyptic number.

It is an amenable number.

21000323013033 is a deficient number, since it is larger than the sum of its proper divisors (14045848404567).

21000323013033 is a wasteful number, since it uses less digits than its factorization.

21000323013033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303801101.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21000323013033 its reverse (33031032300012), we get a palindrome (54031355313045).

The spelling of 21000323013033 in words is "twenty-one trillion, three hundred twenty-three million, thirteen thousand, thirty-three".