2121022203 has 8 divisors (see below), whose sum is σ = 2829153600. Its totient is φ = 1413452808.

The previous prime is 2121022181. The next prime is 2121022219. The reversal of 2121022203 is 3022201212.

It is a happy number.

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

It is not a de Polignac number, because 2121022203 - 2²² = 2116827899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121022223) 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, 131613 + ... + 146846.

It is an arithmetic number, because the mean of its divisors is an integer number (353644200).

Almost surely, 2^2121022203 is an apocalyptic number.

2121022203 is a deficient number, since it is larger than the sum of its proper divisors (708131397).

2121022203 is a wasteful number, since it uses less digits than its factorization.

2121022203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281001.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2121022203 is about 46054.5568103744. The cubic root of 2121022203 is about 1284.8380953439.

Adding to 2121022203 its reverse (3022201212), we get a palindrome (5143223415).

The spelling of 2121022203 in words is "two billion, one hundred twenty-one million, twenty-two thousand, two hundred three".