1222009980 has 48 divisors (see below), whose sum is σ = 3622903200. Its totient is φ = 306700288.

The previous prime is 1222009979. The next prime is 1222010057. The reversal of 1222009980 is 899002221.

It is a happy number.

It is a congruent number.

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, 598005 + ... + 600044.

It is an arithmetic number, because the mean of its divisors is an integer number (75477150).

Almost surely, 2^1222009980 is an apocalyptic number.

1222009980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222009980 is an abundant number, since it is smaller than the sum of its proper divisors (2400893220).

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

1222009980 is a wasteful number, since it uses less digits than its factorization.

1222009980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198078 (or 1198076 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1222009980 is about 34957.2593319328. The cubic root of 1222009980 is about 1069.1162178510.

It can be divided in two parts, 122 and 2009980, that added together give a palindrome (2010102).

The spelling of 1222009980 in words is "one billion, two hundred twenty-two million, nine thousand, nine hundred eighty".