2121031120003 has 4 divisors (see below), whose sum is σ = 2121035159320. Its totient is φ = 2121027080688.

The previous prime is 2121031120001. The next prime is 2121031120057. The reversal of 2121031120003 is 3000211301212.

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 2121031120003 - 2¹ = 2121031120001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121031120001) 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, 1089093 + ... + 2329846.

It is an arithmetic number, because the mean of its divisors is an integer number (530258789830).

Almost surely, 2^{2121031120003} is an apocalyptic number.

2121031120003 is a deficient number, since it is larger than the sum of its proper divisors (4039317).

2121031120003 is an equidigital number, since it uses as much as digits as its factorization.

2121031120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039316.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2121031120003 its reverse (3000211301212), we get a palindrome (5121242421215).

The spelling of 2121031120003 in words is "two trillion, one hundred twenty-one billion, thirty-one million, one hundred twenty thousand, three".