1222218038 has 4 divisors (see below), whose sum is σ = 1833327060. Its totient is φ = 611109018.

The previous prime is 1222218017. The next prime is 1222218061. The reversal of 1222218038 is 8308122221.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222218038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305554508 + ... + 305554511.

It is an arithmetic number, because the mean of its divisors is an integer number (458331765).

Almost surely, 2^1222218038 is an apocalyptic number.

1222218038 is a deficient number, since it is larger than the sum of its proper divisors (611109022).

1222218038 is an equidigital number, since it uses as much as digits as its factorization.

1222218038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611109021.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1222218038 is about 34960.2350964635. The cubic root of 1222218038 is about 1069.1768899030.

The spelling of 1222218038 in words is "one billion, two hundred twenty-two million, two hundred eighteen thousand, thirty-eight".