1222774615 has 4 divisors (see below), whose sum is σ = 1467329544. Its totient is φ = 978219688.

The previous prime is 1222774613. The next prime is 1222774627. The reversal of 1222774615 is 5164772221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5164772221 = 7 ⋅737824603.

It is a cyclic number.

It is not a de Polignac number, because 1222774615 - 2¹ = 1222774613 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 (1222774613) 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, 122277457 + ... + 122277466.

It is an arithmetic number, because the mean of its divisors is an integer number (366832386).

Almost surely, 2^1222774615 is an apocalyptic number.

1222774615 is a deficient number, since it is larger than the sum of its proper divisors (244554929).

1222774615 is an equidigital number, since it uses as much as digits as its factorization.

1222774615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244554928.

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

The square root of 1222774615 is about 34968.1943342804. The cubic root of 1222774615 is about 1069.3391601746.

The spelling of 1222774615 in words is "one billion, two hundred twenty-two million, seven hundred seventy-four thousand, six hundred fifteen".