2101210011100 has 36 divisors (see below), whose sum is σ = 4706710431808. Its totient is φ = 813371616000.

The previous prime is 2101210011091. The next prime is 2101210011127. The reversal of 2101210011100 is 11100121012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338901741 + ... + 338907940.

Almost surely, 2^{2101210011100} is an apocalyptic number.

2101210011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101210011100 is an abundant number, since it is smaller than the sum of its proper divisors (2605500420708).

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

2101210011100 is a wasteful number, since it uses less digits than its factorization.

2101210011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677809726 (or 677809719 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2101210011100 its reverse (11100121012), we get a palindrome (2112310132112).

The spelling of 2101210011100 in words is "two trillion, one hundred one billion, two hundred ten million, eleven thousand, one hundred".