21023211112933 has 2 divisors, whose sum is σ = 21023211112934. Its totient is φ = 21023211112932.

The previous prime is 21023211112861. The next prime is 21023211112957. The reversal of 21023211112933 is 33921111232012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17437497727329 + 3585713385604 = 4175823^2 + 1893598^2 .

It is a cyclic number.

It is not a de Polignac number, because 21023211112933 - 2²⁵ = 21023177558501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21023211112895 and 21023211112904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21023011112933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511605556466 + 10511605556467.

It is an arithmetic number, because the mean of its divisors is an integer number (10511605556467).

Almost surely, 2^{21023211112933} is an apocalyptic number.

It is an amenable number.

21023211112933 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023211112933 is an equidigital number, since it uses as much as digits as its factorization.

21023211112933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

Adding to 21023211112933 its reverse (33921111232012), we get a palindrome (54944322344945).

The spelling of 21023211112933 in words is "twenty-one trillion, twenty-three billion, two hundred eleven million, one hundred twelve thousand, nine hundred thirty-three".