21910274133 has 16 divisors (see below), whose sum is σ = 31872608256. Its totient is φ = 13277654640.

The previous prime is 21910274011. The next prime is 21910274143. The reversal of 21910274133 is 33147201912.

It is not a de Polignac number, because 21910274133 - 2¹⁰ = 21910273109 is a prime.

It is a super-2 number, since 2×21910274133² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 21910274094 and 21910274103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21910274143) 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, 393066 + ... + 445332.

It is an arithmetic number, because the mean of its divisors is an integer number (1992038016).

Almost surely, 2^21910274133 is an apocalyptic number.

It is an amenable number.

21910274133 is a deficient number, since it is larger than the sum of its proper divisors (9962334123).

21910274133 is a wasteful number, since it uses less digits than its factorization.

21910274133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64984.

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 21910274133 in words is "twenty-one billion, nine hundred ten million, two hundred seventy-four thousand, one hundred thirty-three".