2109921102 has 32 divisors (see below), whose sum is σ = 4964522400. Its totient is φ = 661935744.

The previous prime is 2109921091. The next prime is 2109921109. The reversal of 2109921102 is 2011299012.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109921109) by changing a digit.

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, 1148277 + ... + 1150112.

It is an arithmetic number, because the mean of its divisors is an integer number (155141325).

Almost surely, 2^2109921102 is an apocalyptic number.

2109921102 is an abundant number, since it is smaller than the sum of its proper divisors (2854601298).

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

2109921102 is a wasteful number, since it uses less digits than its factorization.

2109921102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298417 (or 2298411 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 2109921102 is about 45933.8774979862. The cubic root of 2109921102 is about 1282.5926255731.

The spelling of 2109921102 in words is "two billion, one hundred nine million, nine hundred twenty-one thousand, one hundred two".