2101111200102 has 64 divisors (see below), whose sum is σ = 4417763848704. Its totient is φ = 664912385280.

The previous prime is 2101111200077. The next prime is 2101111200103. The reversal of 2101111200102 is 2010021111012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101111200103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19597602 + ... + 19704522.

It is an arithmetic number, because the mean of its divisors is an integer number (69027560136).

Almost surely, 2^{2101111200102} is an apocalyptic number.

2101111200102 is an abundant number, since it is smaller than the sum of its proper divisors (2316652648602).

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

2101111200102 is a wasteful number, since it uses less digits than its factorization.

2101111200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108013.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2101111200102 its reverse (2010021111012), we get a palindrome (4111132311114).

The spelling of 2101111200102 in words is "two trillion, one hundred one billion, one hundred eleven million, two hundred thousand, one hundred two".