22012051 has 4 divisors (see below), whose sum is σ = 23170600. Its totient is φ = 20853504.

The previous prime is 22012037. The next prime is 22012057. The reversal of 22012051 is 15021022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15021022 = 2 ⋅7510511.

It is a cyclic number.

It is not a de Polignac number, because 22012051 - 2⁵ = 22012019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579246 + ... + 579283.

It is an arithmetic number, because the mean of its divisors is an integer number (5792650).

Almost surely, 2^22012051 is an apocalyptic number.

22012051 is a deficient number, since it is larger than the sum of its proper divisors (1158549).

22012051 is a wasteful number, since it uses less digits than its factorization.

22012051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158548.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 22012051 is about 4691.7002248652. The cubic root of 22012051 is about 280.2550864174.

Adding to 22012051 its reverse (15021022), we get a palindrome (37033073).

The spelling of 22012051 in words is "twenty-two million, twelve thousand, fifty-one".