2102121200202 has 64 divisors (see below), whose sum is σ = 4428608515200. Its totient is φ = 664235470080.

The previous prime is 2102121200171. The next prime is 2102121200237. The reversal of 2102121200202 is 2020021212012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5624824 + ... + 5986892.

It is an arithmetic number, because the mean of its divisors is an integer number (69197008050).

Almost surely, 2^{2102121200202} is an apocalyptic number.

2102121200202 is an abundant number, since it is smaller than the sum of its proper divisors (2326487314998).

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

2102121200202 is a wasteful number, since it uses less digits than its factorization.

2102121200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362711.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2102121200202 its reverse (2020021212012), we get a palindrome (4122142412214).

The spelling of 2102121200202 in words is "two trillion, one hundred two billion, one hundred twenty-one million, two hundred thousand, two hundred two".