2101013100 has 72 divisors (see below), whose sum is σ = 6754376720. Its totient is φ = 560269440.

The previous prime is 2101013099. The next prime is 2101013107. The reversal of 2101013100 is 13101012.

It is a super-2 number, since 2×2101013100² = 8828512092743220000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2101013107) 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 23 ways as a sum of consecutive naturals, for example, 386377 + ... + 391776.

Almost surely, 2^2101013100 is an apocalyptic number.

2101013100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101013100 is an abundant number, since it is smaller than the sum of its proper divisors (4653363620).

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

2101013100 is a wasteful number, since it uses less digits than its factorization.

2101013100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778176 (or 778163 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 2101013100 is about 45836.8094439393. The cubic root of 2101013100 is about 1280.7850612067.

Adding to 2101013100 its reverse (13101012), we get a palindrome (2114114112).

The spelling of 2101013100 in words is "two billion, one hundred one million, thirteen thousand, one hundred".