22121207 has 8 divisors (see below), whose sum is σ = 22442784. Its totient is φ = 21801888.

The previous prime is 22121201. The next prime is 22121213. The reversal of 22121207 is 70212122.

It is an interprime number because it is at equal distance from previous prime (22121201) and next prime (22121213).

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 22121207 - 2⁴ = 22121191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121201) 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, 29813 + ... + 30545.

It is an arithmetic number, because the mean of its divisors is an integer number (2805348).

Almost surely, 2^22121207 is an apocalyptic number.

22121207 is a deficient number, since it is larger than the sum of its proper divisors (321577).

22121207 is a wasteful number, since it uses less digits than its factorization.

22121207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 22121207 is about 4703.3187219239. The cubic root of 22121207 is about 280.7175769579.

Adding to 22121207 its reverse (70212122), we get a palindrome (92333329).

The spelling of 22121207 in words is "twenty-two million, one hundred twenty-one thousand, two hundred seven".