21112701433 has 4 divisors (see below), whose sum is σ = 21116410468. Its totient is φ = 21108992400.

The previous prime is 21112701419. The next prime is 21112701509. The reversal of 21112701433 is 33410721112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9286791424 + 11825910009 = 96368^2 + 108747^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112701433 - 2¹³ = 21112693241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21112701398 and 21112701407.

It is not an unprimeable number, because it can be changed into a prime (21112701733) 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, 1845966 + ... + 1857367.

It is an arithmetic number, because the mean of its divisors is an integer number (5279102617).

Almost surely, 2^21112701433 is an apocalyptic number.

It is an amenable number.

21112701433 is a deficient number, since it is larger than the sum of its proper divisors (3709035).

21112701433 is an equidigital number, since it uses as much as digits as its factorization.

21112701433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709034.

The product of its (nonzero) digits is 1008, while the sum is 25.

The spelling of 21112701433 in words is "twenty-one billion, one hundred twelve million, seven hundred one thousand, four hundred thirty-three".