22121007 has 8 divisors (see below), whose sum is σ = 29546160. Its totient is φ = 14721600.

The previous prime is 22121003. The next prime is 22121041. The reversal of 22121007 is 70012122.

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

It is not a de Polignac number, because 22121007 - 2² = 22121003 is a prime.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4332 + ... + 7937.

It is an arithmetic number, because the mean of its divisors is an integer number (3693270).

Almost surely, 2^22121007 is an apocalyptic number.

22121007 is a deficient number, since it is larger than the sum of its proper divisors (7425153).

22121007 is a wasteful number, since it uses less digits than its factorization.

22121007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12873.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 22121007 is about 4703.2974602932. The cubic root of 22121007 is about 280.7167309569.

Adding to 22121007 its reverse (70012122), we get a palindrome (92133129).

The spelling of 22121007 in words is "twenty-two million, one hundred twenty-one thousand, seven".