7990121102 has 12 divisors (see below), whose sum is σ = 12384274968. Its totient is φ = 3866186700.

The previous prime is 7990121099. The next prime is 7990121131. The reversal of 7990121102 is 2011210997.

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 5 ways as a sum of consecutive naturals, for example, 2076674 + ... + 2080517.

It is an arithmetic number, because the mean of its divisors is an integer number (1032022914).

Almost surely, 2^7990121102 is an apocalyptic number.

7990121102 is a deficient number, since it is larger than the sum of its proper divisors (4394153866).

7990121102 is a wasteful number, since it uses less digits than its factorization.

7990121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157255 (or 4157224 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 7990121102 is about 89387.4773220500. The cubic root of 7990121102 is about 1999.1764194041.

The spelling of 7990121102 in words is "seven billion, nine hundred ninety million, one hundred twenty-one thousand, one hundred two".