1222540297 has 4 divisors (see below), whose sum is σ = 1333680336. Its totient is φ = 1111400260.

The previous prime is 1222540279. The next prime is 1222540301. The reversal of 1222540297 is 7920452221.

It is a happy number.

1222540297 is nontrivially palindromic in base 8.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7920452221 = 11 ⋅720041111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222540297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222540217) 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, 55570003 + ... + 55570024.

It is an arithmetic number, because the mean of its divisors is an integer number (333420084).

Almost surely, 2^1222540297 is an apocalyptic number.

It is an amenable number.

1222540297 is a deficient number, since it is larger than the sum of its proper divisors (111140039).

1222540297 is a wasteful number, since it uses less digits than its factorization.

1222540297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111140038.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1222540297 is about 34964.8437290945. The cubic root of 1222540297 is about 1069.2708506603.

The spelling of 1222540297 in words is "one billion, two hundred twenty-two million, five hundred forty thousand, two hundred ninety-seven".