1222290737 has 4 divisors (see below), whose sum is σ = 1224285300. Its totient is φ = 1220296176.

The previous prime is 1222290731. The next prime is 1222290763. The reversal of 1222290737 is 7370922221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120648256 + 1101642481 = 10984^2 + 33191^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222290737 - 2²⁴ = 1205513521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222290697 and 1222290706.

It is not an unprimeable number, because it can be changed into a prime (1222290731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996362 + ... + 997587.

It is an arithmetic number, because the mean of its divisors is an integer number (306071325).

Almost surely, 2^1222290737 is an apocalyptic number.

It is an amenable number.

1222290737 is a deficient number, since it is larger than the sum of its proper divisors (1994563).

1222290737 is an equidigital number, since it uses as much as digits as its factorization.

1222290737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994562.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 1222290737 is about 34961.2748194341. The cubic root of 1222290737 is about 1069.1980881255.

The spelling of 1222290737 in words is "one billion, two hundred twenty-two million, two hundred ninety thousand, seven hundred thirty-seven".