2121122113203 has 8 divisors (see below), whose sum is σ = 2828173306816. Its totient is φ = 1414076164200.

The previous prime is 2121122113171. The next prime is 2121122113223. The reversal of 2121122113203 is 3023112211212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121122113203 - 2⁵ = 2121122113171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121122113203.

It is not an unprimeable number, because it can be changed into a prime (2121122113223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243193 + ... + 2073978.

It is an arithmetic number, because the mean of its divisors is an integer number (353521663352).

Almost surely, 2^{2121122113203} is an apocalyptic number.

2121122113203 is a deficient number, since it is larger than the sum of its proper divisors (707051193613).

2121122113203 is a wasteful number, since it uses less digits than its factorization.

2121122113203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622305.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2121122113203 its reverse (3023112211212), we get a palindrome (5144234324415).

The spelling of 2121122113203 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred thirteen thousand, two hundred three".