22121013 has 8 divisors (see below), whose sum is σ = 29548800. Its totient is φ = 14720288.

The previous prime is 22121003. The next prime is 22121041. The reversal of 22121013 is 31012122.

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 22121013 - 2¹⁰ = 22119989 is a prime.

It is a super-2 number, since 2×22121013² = 978678432292338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4773 + ... + 8186.

It is an arithmetic number, because the mean of its divisors is an integer number (3693600).

Almost surely, 2^22121013 is an apocalyptic number.

It is an amenable number.

22121013 is a deficient number, since it is larger than the sum of its proper divisors (7427787).

22121013 is a wasteful number, since it uses less digits than its factorization.

22121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13531.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 22121013 is about 4703.2980981435. The cubic root of 22121013 is about 280.7167563370.

Adding to 22121013 its reverse (31012122), we get a palindrome (53133135).

The spelling of 22121013 in words is "twenty-two million, one hundred twenty-one thousand, thirteen".