2100102101100 has 144 divisors (see below), whose sum is σ = 6836901299200. Its totient is φ = 552938218560.

The previous prime is 2100102101081. The next prime is 2100102101101. The reversal of 2100102101100 is 11012010012.

It is a happy number.

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 (2100102101101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4709584 + ... + 5136183.

Almost surely, 2^{2100102101100} is an apocalyptic number.

2100102101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100102101100 is an abundant number, since it is smaller than the sum of its proper divisors (4736799198100).

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

2100102101100 is a wasteful number, since it uses less digits than its factorization.

2100102101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9845869 (or 9845856 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2100102101100 its reverse (11012010012), we get a palindrome (2111114111112).

The spelling of 2100102101100 in words is "two trillion, one hundred billion, one hundred two million, one hundred one thousand, one hundred".