1222645450 has 24 divisors (see below), whose sum is σ = 2449054188. Its totient is φ = 451438080.

The previous prime is 1222645447. The next prime is 1222645513. The reversal of 1222645450 is 545462221.

It can be written as a sum of positive squares in 6 ways, for example, as 305585361 + 917060089 = 17481^2 + 30283^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 939847 + ... + 941146.

Almost surely, 2^1222645450 is an apocalyptic number.

1222645450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222645450 is an abundant number, since it is smaller than the sum of its proper divisors (1226408738).

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

1222645450 is a wasteful number, since it uses less digits than its factorization.

1222645450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881018 (or 1881013 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1222645450 is about 34966.3473928862. The cubic root of 1222645450 is about 1069.3015064499.

The spelling of 1222645450 in words is "one billion, two hundred twenty-two million, six hundred forty-five thousand, four hundred fifty".