22021349 has 8 divisors (see below), whose sum is σ = 25403328. Its totient is φ = 18698400.

The previous prime is 22021331. The next prime is 22021357. The reversal of 22021349 is 94312022.

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

It is not a de Polignac number, because 22021349 - 2⁸ = 22021093 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 (22021319) 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, 13952 + ... + 15449.

It is an arithmetic number, because the mean of its divisors is an integer number (3175416).

Almost surely, 2^22021349 is an apocalyptic number.

It is an amenable number.

22021349 is a deficient number, since it is larger than the sum of its proper divisors (3381979).

22021349 is a wasteful number, since it uses less digits than its factorization.

22021349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29515.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 22021349 is about 4692.6910190210. The cubic root of 22021349 is about 280.2945412442.

The spelling of 22021349 in words is "twenty-two million, twenty-one thousand, three hundred forty-nine".