22012013 has 8 divisors (see below), whose sum is σ = 23608800. Its totient is φ = 20459088.

The previous prime is 22011967. The next prime is 22012019. The reversal of 22012013 is 31021022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22012013 - 2⁶ = 22011949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22011985 and 22012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012019) 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, 9923 + ... + 11936.

It is an arithmetic number, because the mean of its divisors is an integer number (2951100).

Almost surely, 2^22012013 is an apocalyptic number.

It is an amenable number.

22012013 is a deficient number, since it is larger than the sum of its proper divisors (1596787).

22012013 is a wasteful number, since it uses less digits than its factorization.

22012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21931.

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

The square root of 22012013 is about 4691.6961751588. The cubic root of 22012013 is about 280.2549251467.

Adding to 22012013 its reverse (31021022), we get a palindrome (53033035).

Subtracting 22012013 from its reverse (31021022), we obtain a palindrome (9009009).

The spelling of 22012013 in words is "twenty-two million, twelve thousand, thirteen".