1222290697 has 4 divisors (see below), whose sum is σ = 1223321616. Its totient is φ = 1221259780.

The previous prime is 1222290689. The next prime is 1222290731. The reversal of 1222290697 is 7960922221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222290697 - 2³ = 1222290689 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222290617) 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, 513679 + ... + 516052.

It is an arithmetic number, because the mean of its divisors is an integer number (305830404).

Almost surely, 2^1222290697 is an apocalyptic number.

It is an amenable number.

1222290697 is a deficient number, since it is larger than the sum of its proper divisors (1030919).

1222290697 is a wasteful number, since it uses less digits than its factorization.

1222290697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030918.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1222290697 is about 34961.2742473726. The cubic root of 1222290697 is about 1069.1980764621.

The spelling of 1222290697 in words is "one billion, two hundred twenty-two million, two hundred ninety thousand, six hundred ninety-seven".