2121101203 has 16 divisors (see below), whose sum is σ = 2423566656. Its totient is φ = 1839006720.

The previous prime is 2121101197. The next prime is 2121101261. The reversal of 2121101203 is 3021011212.

It is a cyclic number.

It is not a de Polignac number, because 2121101203 - 2⁹ = 2121100691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121101263) 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, 101623 + ... + 120703.

It is an arithmetic number, because the mean of its divisors is an integer number (151472916).

Almost surely, 2^2121101203 is an apocalyptic number.

2121101203 is a deficient number, since it is larger than the sum of its proper divisors (302465453).

2121101203 is a wasteful number, since it uses less digits than its factorization.

2121101203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19614.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2121101203 is about 46055.4144808186. The cubic root of 2121101203 is about 1284.8540469213.

Adding to 2121101203 its reverse (3021011212), we get a palindrome (5142112415).

The spelling of 2121101203 in words is "two billion, one hundred twenty-one million, one hundred one thousand, two hundred three".