1222010997 has 4 divisors (see below), whose sum is σ = 1629348000. Its totient is φ = 814673996.

The previous prime is 1222010989. The next prime is 1222011013. The reversal of 1222010997 is 7990102221.

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 1222010997 - 2³ = 1222010989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222010927) 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, 203668497 + ... + 203668502.

It is an arithmetic number, because the mean of its divisors is an integer number (407337000).

Almost surely, 2^1222010997 is an apocalyptic number.

It is an amenable number.

1222010997 is a deficient number, since it is larger than the sum of its proper divisors (407337003).

1222010997 is an equidigital number, since it uses as much as digits as its factorization.

1222010997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407337002.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 1222010997 is about 34957.2738782646. The cubic root of 1222010997 is about 1069.1165144364.

The spelling of 1222010997 in words is "one billion, two hundred twenty-two million, ten thousand, nine hundred ninety-seven".