2012100102 has 20 divisors (see below), whose sum is σ = 4508595036. Its totient is φ = 670699980.

The previous prime is 2012100091. The next prime is 2012100107. The reversal of 2012100102 is 2010012102.

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 (2012100107) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6210024 + ... + 6210347.

Almost surely, 2^2012100102 is an apocalyptic number.

2012100102 is an abundant number, since it is smaller than the sum of its proper divisors (2496494934).

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

2012100102 is a wasteful number, since it uses less digits than its factorization.

2012100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12420385 (or 12420376 counting only the distinct ones).

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

The square root of 2012100102 is about 44856.4388020271. The cubic root of 2012100102 is about 1262.4568051359.

Adding to 2012100102 its reverse (2010012102), we get a palindrome (4022112204).

The spelling of 2012100102 in words is "two billion, twelve million, one hundred thousand, one hundred two".