21133322113031 has 4 divisors (see below), whose sum is σ = 21133424951232. Its totient is φ = 21133219274832.

The previous prime is 21133322113021. The next prime is 21133322113051. The reversal of 21133322113031 is 13031122333112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21133322113031 - 2¹⁴ = 21133322096647 is a prime.

It is a super-2 number, since 2×21133322113031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133322113021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51110231 + ... + 51522056.

It is an arithmetic number, because the mean of its divisors is an integer number (5283356237808).

Almost surely, 2^{21133322113031} is an apocalyptic number.

21133322113031 is a deficient number, since it is larger than the sum of its proper divisors (102838201).

21133322113031 is a wasteful number, since it uses less digits than its factorization.

21133322113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102838200.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21133322113031 its reverse (13031122333112), we get a palindrome (34164444446143).

The spelling of 21133322113031 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred twenty-two million, one hundred thirteen thousand, thirty-one".