1222375087 has 4 divisors (see below), whose sum is σ = 1222677400. Its totient is φ = 1222072776.

The previous prime is 1222375073. The next prime is 1222375109. The reversal of 1222375087 is 7805732221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7805732221 = 7 ⋅1115104603.

It is a cyclic number.

It is not a de Polignac number, because 1222375087 - 2²⁷ = 1088157359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222370087) 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, 145008 + ... + 153205.

It is an arithmetic number, because the mean of its divisors is an integer number (305669350).

Almost surely, 2^1222375087 is an apocalyptic number.

1222375087 is a deficient number, since it is larger than the sum of its proper divisors (302313).

1222375087 is an equidigital number, since it uses as much as digits as its factorization.

1222375087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302312.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 1222375087 is about 34962.4811333521. The cubic root of 1222375087 is about 1069.2226825970. Note that the first 3 decimals are identical.

The spelling of 1222375087 in words is "one billion, two hundred twenty-two million, three hundred seventy-five thousand, eighty-seven".