21332701 has 6 divisors (see below), whose sum is σ = 23100090. Its totient is φ = 19691568.

The previous prime is 21332693. The next prime is 21332711. The reversal of 21332701 is 10723312.

It can be written as a sum of positive squares in 3 ways, for example, as 811801 + 20520900 = 901^2 + 4530^2 .

It is not a de Polignac number, because 21332701 - 2³ = 21332693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62946 + ... + 63283.

It is an arithmetic number, because the mean of its divisors is an integer number (3850015).

Almost surely, 2^21332701 is an apocalyptic number.

It is an amenable number.

21332701 is a deficient number, since it is larger than the sum of its proper divisors (1767389).

21332701 is a wasteful number, since it uses less digits than its factorization.

21332701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126255 (or 126242 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 21332701 is about 4618.7337009185. The cubic root of 21332701 is about 277.3417694916.

The spelling of 21332701 in words is "twenty-one million, three hundred thirty-two thousand, seven hundred one".