2121102112203 has 16 divisors (see below), whose sum is σ = 3142674364800. Its totient is φ = 1413932685480.

The previous prime is 2121102112183. The next prime is 2121102112229. The reversal of 2121102112203 is 3022112011212.

2121102112203 is a `hidden beast` number, since 21 + 211 + 0 + 211 + 220 + 3 = 666.

It is not a de Polignac number, because 2121102112203 - 2¹² = 2121102108107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121102112243) 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, 3473193 + ... + 4037978.

It is an arithmetic number, because the mean of its divisors is an integer number (196417147800).

Almost surely, 2^{2121102112203} is an apocalyptic number.

2121102112203 is a deficient number, since it is larger than the sum of its proper divisors (1021572252597).

2121102112203 is a wasteful number, since it uses less digits than its factorization.

2121102112203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521639 (or 7521633 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2121102112203 its reverse (3022112011212), we get a palindrome (5143214123415).

The spelling of 2121102112203 in words is "two trillion, one hundred twenty-one billion, one hundred two million, one hundred twelve thousand, two hundred three".