21110201933 has 2 divisors, whose sum is σ = 21110201934. Its totient is φ = 21110201932.

The previous prime is 21110201929. The next prime is 21110201953. The reversal of 21110201933 is 33910201112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20039799844 + 1070402089 = 141562^2 + 32717^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110201933 - 2² = 21110201929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21110201899 and 21110201908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110201923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555100966 + 10555100967.

It is an arithmetic number, because the mean of its divisors is an integer number (10555100967).

Almost surely, 2^21110201933 is an apocalyptic number.

It is an amenable number.

21110201933 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110201933 is an equidigital number, since it uses as much as digits as its factorization.

21110201933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 21110201933 in words is "twenty-one billion, one hundred ten million, two hundred one thousand, nine hundred thirty-three".