2101200102102 has 128 divisors (see below), whose sum is σ = 4713663144960. Its totient is φ = 620530606080.

The previous prime is 2101200102077. The next prime is 2101200102103. The reversal of 2101200102102 is 2012010021012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101200102103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 336350343 + ... + 336356589.

It is an arithmetic number, because the mean of its divisors is an integer number (36825493320).

Almost surely, 2^{2101200102102} is an apocalyptic number.

2101200102102 is an abundant number, since it is smaller than the sum of its proper divisors (2612463042858).

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

2101200102102 is a wasteful number, since it uses less digits than its factorization.

2101200102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7366.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2101200102102 its reverse (2012010021012), we get a palindrome (4113210123114).

The spelling of 2101200102102 in words is "two trillion, one hundred one billion, two hundred million, one hundred two thousand, one hundred two".