1222919490 has 48 divisors (see below), whose sum is σ = 3178156608. Its totient is φ = 301025088.

The previous prime is 1222919479. The next prime is 1222919501. The reversal of 1222919490 is 949192221.

It is an interprime number because it is at equal distance from previous prime (1222919479) and next prime (1222919501).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115534 + ... + 125673.

It is an arithmetic number, because the mean of its divisors is an integer number (66211596).

Almost surely, 2^1222919490 is an apocalyptic number.

1222919490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222919490 is an abundant number, since it is smaller than the sum of its proper divisors (1955237118).

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

1222919490 is a wasteful number, since it uses less digits than its factorization.

1222919490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241243 (or 241230 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1222919490 is about 34970.2657982464. The cubic root of 1222919490 is about 1069.3813904682.

The spelling of 1222919490 in words is "one billion, two hundred twenty-two million, nine hundred nineteen thousand, four hundred ninety".