1220990110 has 16 divisors (see below), whose sum is σ = 2222478000. Its totient is φ = 482908096.

The previous prime is 1220990107. The next prime is 1220990123. The reversal of 1220990110 is 110990221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685060 + ... + 686839.

It is an arithmetic number, because the mean of its divisors is an integer number (138904875).

Almost surely, 2^1220990110 is an apocalyptic number.

1220990110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220990110 is a deficient number, since it is larger than the sum of its proper divisors (1001487890).

1220990110 is a wasteful number, since it uses less digits than its factorization.

1220990110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371995.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 1220990110 is about 34942.6689020744. The cubic root of 1220990110 is about 1068.8187126347.

The spelling of 1220990110 in words is "one billion, two hundred twenty million, nine hundred ninety thousand, one hundred ten".