2121200022102 has 32 divisors (see below), whose sum is σ = 4850458440192. Its totient is φ = 605806993344.

The previous prime is 2121200022047. The next prime is 2121200022103. The reversal of 2121200022102 is 2012200021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200022103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10320183 + ... + 10523714.

It is an arithmetic number, because the mean of its divisors is an integer number (151576826256).

Almost surely, 2^{2121200022102} is an apocalyptic number.

2121200022102 is an abundant number, since it is smaller than the sum of its proper divisors (2729258418090).

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

2121200022102 is a wasteful number, since it uses less digits than its factorization.

2121200022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20846332.

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

Adding to 2121200022102 its reverse (2012200021212), we get a palindrome (4133400043314).

The spelling of 2121200022102 in words is "two trillion, one hundred twenty-one billion, two hundred million, twenty-two thousand, one hundred two".