1222375051 has 4 divisors (see below), whose sum is σ = 1286710600. Its totient is φ = 1158039504.

The previous prime is 1222374983. The next prime is 1222375073. The reversal of 1222375051 is 1505732221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222375051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222378051) 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, 32167746 + ... + 32167783.

It is an arithmetic number, because the mean of its divisors is an integer number (321677650).

Almost surely, 2^1222375051 is an apocalyptic number.

1222375051 is a deficient number, since it is larger than the sum of its proper divisors (64335549).

1222375051 is an equidigital number, since it uses as much as digits as its factorization.

1222375051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64335548.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1222375051 is about 34962.4806185145. The cubic root of 1222375051 is about 1069.2226721005. Note that the first 3 decimals are identical.

The spelling of 1222375051 in words is "one billion, two hundred twenty-two million, three hundred seventy-five thousand, fifty-one".