922213121 has 2 divisors, whose sum is σ = 922213122. Its totient is φ = 922213120.

The previous prime is 922213109. The next prime is 922213157. The reversal of 922213121 is 121312229.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 897601600 + 24611521 = 29960^2 + 4961^2 .

It is an emirp because it is prime and its reverse (121312229) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-922213121 is a prime.

It is not a weakly prime, because it can be changed into another prime (922213181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461106560 + 461106561.

It is an arithmetic number, because the mean of its divisors is an integer number (461106561).

Almost surely, 2^922213121 is an apocalyptic number.

It is an amenable number.

922213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

922213121 is an equidigital number, since it uses as much as digits as its factorization.

922213121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 922213121 is about 30367.9620817730. The cubic root of 922213121 is about 973.3680773418.

The spelling of 922213121 in words is "nine hundred twenty-two million, two hundred thirteen thousand, one hundred twenty-one".