1202100990 has 32 divisors (see below), whose sum is σ = 2913614496. Its totient is φ = 317385600.

The previous prime is 1202100989. The next prime is 1202101007. The reversal of 1202100990 is 990012021.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1202100990.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195337 + ... + 201396.

It is an arithmetic number, because the mean of its divisors is an integer number (91050453).

Almost surely, 2^1202100990 is an apocalyptic number.

1202100990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1202100990 is an abundant number, since it is smaller than the sum of its proper divisors (1711513506).

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

1202100990 is a wasteful number, since it uses less digits than its factorization.

1202100990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396844.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1202100990 is about 34671.3280680161. The cubic root of 1202100990 is about 1063.2783839906.

The spelling of 1202100990 in words is "one billion, two hundred two million, one hundred thousand, nine hundred ninety".