2120100102 has 16 divisors (see below), whose sum is σ = 4711333680. Its totient is φ = 706700016.

The previous prime is 2120100077. The next prime is 2120100109. The reversal of 2120100102 is 2010010212.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120100109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19630503 + ... + 19630610.

It is an arithmetic number, because the mean of its divisors is an integer number (294458355).

Almost surely, 2^2120100102 is an apocalyptic number.

2120100102 is an abundant number, since it is smaller than the sum of its proper divisors (2591233578).

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

2120100102 is a wasteful number, since it uses less digits than its factorization.

2120100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39261124 (or 39261118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2120100102 is about 46044.5447583099. The cubic root of 2120100102 is about 1284.6518766078.

Adding to 2120100102 its reverse (2010010212), we get a palindrome (4130110314).

The spelling of 2120100102 in words is "two billion, one hundred twenty million, one hundred thousand, one hundred two".