22121042 has 16 divisors (see below), whose sum is σ = 35181312. Its totient is φ = 10413360.

The previous prime is 22121041. The next prime is 22121051. The reversal of 22121042 is 24012122.

It is not an unprimeable number, because it can be changed into a prime (22121041) 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, 2528 + ... + 7115.

It is an arithmetic number, because the mean of its divisors is an integer number (2198832).

Almost surely, 2^22121042 is an apocalyptic number.

22121042 is a deficient number, since it is larger than the sum of its proper divisors (13060270).

22121042 is a wasteful number, since it uses less digits than its factorization.

22121042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22121042 is about 4703.3011810855. The cubic root of 22121042 is about 280.7168790075.

Adding to 22121042 its reverse (24012122), we get a palindrome (46133164).

The spelling of 22121042 in words is "twenty-two million, one hundred twenty-one thousand, forty-two".