1222422440 has 16 divisors (see below), whose sum is σ = 2750450580. Its totient is φ = 488968960.

The previous prime is 1222422427. The next prime is 1222422479. The reversal of 1222422440 is 442242221.

It can be written as a sum of positive squares in 2 ways, for example, as 1217591236 + 4831204 = 34894^2 + 2198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15280241 + ... + 15280320.

Almost surely, 2^1222422440 is an apocalyptic number.

1222422440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222422440 is an abundant number, since it is smaller than the sum of its proper divisors (1528028140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222422440 is a wasteful number, since it uses less digits than its factorization.

1222422440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30560572 (or 30560568 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1222422440 is about 34963.1583241560. The cubic root of 1222422440 is about 1069.2364891196.

Adding to 1222422440 its reverse (442242221), we get a palindrome (1664664661).

The spelling of 1222422440 in words is "one billion, two hundred twenty-two million, four hundred twenty-two thousand, four hundred forty".