1222220940 has 48 divisors (see below), whose sum is σ = 3427522560. Its totient is φ = 325420480.

The previous prime is 1222220939. The next prime is 1222220971. The reversal of 1222220940 is 490222221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222220940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24085 + ... + 54995.

It is an arithmetic number, because the mean of its divisors is an integer number (71406720).

Almost surely, 2^1222220940 is an apocalyptic number.

1222220940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222220940 is an abundant number, since it is smaller than the sum of its proper divisors (2205301620).

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

1222220940 is a wasteful number, since it uses less digits than its factorization.

1222220940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31582 (or 31580 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1222220940 is about 34960.2766007364. The cubic root of 1222220940 is about 1069.1777361101.

The spelling of 1222220940 in words is "one billion, two hundred twenty-two million, two hundred twenty thousand, nine hundred forty".