22013012 has 12 divisors (see below), whose sum is σ = 44026080. Its totient is φ = 9434136.

The previous prime is 22012981. The next prime is 22013021. The reversal of 22013012 is 21031022.

It is a happy number.

22013012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 22012984 and 22013002.

It is a congruent number.

It is an unprimeable number.

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, 393062 + ... + 393117.

It is an arithmetic number, because the mean of its divisors is an integer number (3668840).

Almost surely, 2^22013012 is an apocalyptic number.

It is an amenable number.

22013012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22013012 is a wasteful number, since it uses less digits than its factorization.

22013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786190 (or 786188 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 22013012 is about 4691.8026386454. The cubic root of 22013012 is about 280.2591648079.

Adding to 22013012 its reverse (21031022), we get a palindrome (43044034).

The spelling of 22013012 in words is "twenty-two million, thirteen thousand, twelve".