2121020112203 has 4 divisors (see below), whose sum is σ = 2170346161368. Its totient is φ = 2071694063040.

The previous prime is 2121020112191. The next prime is 2121020112209. The reversal of 2121020112203 is 3022110201212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121020112203 - 2⁴ = 2121020112187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121020112209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24663024518 + ... + 24663024603.

It is an arithmetic number, because the mean of its divisors is an integer number (542586540342).

Almost surely, 2^{2121020112203} is an apocalyptic number.

2121020112203 is a deficient number, since it is larger than the sum of its proper divisors (49326049165).

2121020112203 is an equidigital number, since it uses as much as digits as its factorization.

2121020112203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49326049164.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2121020112203 its reverse (3022110201212), we get a palindrome (5143130313415).

The spelling of 2121020112203 in words is "two trillion, one hundred twenty-one billion, twenty million, one hundred twelve thousand, two hundred three".