2100121100202 has 48 divisors (see below), whose sum is σ = 4605779711232. Its totient is φ = 637607907840.

The previous prime is 2100121100197. The next prime is 2100121100221. The reversal of 2100121100202 is 2020011210012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19480803 + ... + 19588310.

It is an arithmetic number, because the mean of its divisors is an integer number (95953743984).

Almost surely, 2^{2100121100202} is an apocalyptic number.

2100121100202 is an abundant number, since it is smaller than the sum of its proper divisors (2505658611030).

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

2100121100202 is a wasteful number, since it uses less digits than its factorization.

2100121100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39069183 (or 39069166 counting only the distinct ones).

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

Adding to 2100121100202 its reverse (2020011210012), we get a palindrome (4120132310214).

The spelling of 2100121100202 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred thousand, two hundred two".