22347121 has 2 divisors, whose sum is σ = 22347122. Its totient is φ = 22347120.

The previous prime is 22347119. The next prime is 22347133. The reversal of 22347121 is 12174322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13727025 + 8620096 = 3705^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 22347121 - 2¹ = 22347119 is a prime.

Together with 22347119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22347092 and 22347101.

It is not a weakly prime, because it can be changed into another prime (22347161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11173560 + 11173561.

It is an arithmetic number, because the mean of its divisors is an integer number (11173561).

Almost surely, 2^22347121 is an apocalyptic number.

It is an amenable number.

22347121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22347121 is an equidigital number, since it uses as much as digits as its factorization.

22347121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 22.

The square root of 22347121 is about 4727.2741617131. The cubic root of 22347121 is about 281.6699565846.

The spelling of 22347121 in words is "twenty-two million, three hundred forty-seven thousand, one hundred twenty-one".