1202117988 has 12 divisors (see below), whose sum is σ = 2804942000. Its totient is φ = 400705992.

The previous prime is 1202117981. The next prime is 1202117989. The reversal of 1202117988 is 8897112021.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1202117981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50088238 + ... + 50088261.

Almost surely, 2^1202117988 is an apocalyptic number.

It is an amenable number.

1202117988 is an abundant number, since it is smaller than the sum of its proper divisors (1602824012).

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

1202117988 is a wasteful number, since it uses less digits than its factorization.

1202117988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100176506 (or 100176504 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 1202117988 is about 34671.5731976500. The cubic root of 1202117988 is about 1063.2833956385.

The spelling of 1202117988 in words is "one billion, two hundred two million, one hundred seventeen thousand, nine hundred eighty-eight".