22321057 has 16 divisors (see below), whose sum is σ = 25032960. Its totient is φ = 19731600.

The previous prime is 22321043. The next prime is 22321069. The reversal of 22321057 is 75012322.

It is a cyclic number.

It is not a de Polignac number, because 22321057 - 2⁷ = 22320929 is a prime.

It is a super-3 number, since 3×22321057³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22321007) 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, 105682 + ... + 105892.

It is an arithmetic number, because the mean of its divisors is an integer number (1564560).

Almost surely, 2^22321057 is an apocalyptic number.

It is an amenable number.

22321057 is a deficient number, since it is larger than the sum of its proper divisors (2711903).

22321057 is a wasteful number, since it uses less digits than its factorization.

22321057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 22321057 is about 4724.5165890279. The cubic root of 22321057 is about 281.5604077712.

Adding to 22321057 its reverse (75012322), we get a palindrome (97333379).

The spelling of 22321057 in words is "twenty-two million, three hundred twenty-one thousand, fifty-seven".