21012113133033 has 16 divisors (see below), whose sum is σ = 31616972740800. Its totient is φ = 12295489398080.

The previous prime is 21012113133023. The next prime is 21012113133071. The reversal of 21012113133033 is 33033131121012.

It is a cyclic number.

It is not a de Polignac number, because 21012113133033 - 2²⁵ = 21012079578601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21012113132994 and 21012113133012.

It is not an unprimeable number, because it can be changed into a prime (21012113133023) 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, 10978114578 + ... + 10978116491.

It is an arithmetic number, because the mean of its divisors is an integer number (1976060796300).

Almost surely, 2^{21012113133033} is an apocalyptic number.

It is an amenable number.

21012113133033 is a deficient number, since it is larger than the sum of its proper divisors (10604859607767).

21012113133033 is a wasteful number, since it uses less digits than its factorization.

21012113133033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21956231112.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21012113133033 its reverse (33033131121012), we get a palindrome (54045244254045).

The spelling of 21012113133033 in words is "twenty-one trillion, twelve billion, one hundred thirteen million, one hundred thirty-three thousand, thirty-three".