22021037 has 8 divisors (see below), whose sum is σ = 22344000. Its totient is φ = 21700224.

The previous prime is 22021009. The next prime is 22021049. The reversal of 22021037 is 73012022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22021037 - 2¹² = 22016941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36464 + ... + 37062.

It is an arithmetic number, because the mean of its divisors is an integer number (2793000).

Almost surely, 2^22021037 is an apocalyptic number.

It is an amenable number.

22021037 is a deficient number, since it is larger than the sum of its proper divisors (322963).

22021037 is an equidigital number, since it uses as much as digits as its factorization.

22021037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 22021037 is about 4692.6577757173. The cubic root of 22021037 is about 280.2932174938.

Adding to 22021037 its reverse (73012022), we get a palindrome (95033059).

The spelling of 22021037 in words is "twenty-two million, twenty-one thousand, thirty-seven".