2120121122003 has 4 divisors (see below), whose sum is σ = 2123557299480. Its totient is φ = 2116684944528.

The previous prime is 2120121121973. The next prime is 2120121122059. The reversal of 2120121122003 is 3002211210212.

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 2120121122003 - 2²⁶ = 2120054013139 is a prime.

It is a super-2 number, since 2×2120121122003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120121128003) 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, 1718087813 + ... + 1718089046.

It is an arithmetic number, because the mean of its divisors is an integer number (530889324870).

Almost surely, 2^{2120121122003} is an apocalyptic number.

2120121122003 is a deficient number, since it is larger than the sum of its proper divisors (3436177477).

2120121122003 is an equidigital number, since it uses as much as digits as its factorization.

2120121122003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436177476.

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

Adding to 2120121122003 its reverse (3002211210212), we get a palindrome (5122332332215).

The spelling of 2120121122003 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, three".