2121121132303 has 4 divisors (see below), whose sum is σ = 2121143231808. Its totient is φ = 2121099032800.

The previous prime is 2121121132301. The next prime is 2121121132313. The reversal of 2121121132303 is 3032311211212.

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 2121121132303 - 2¹ = 2121121132301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121121132301) 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, 10905151 + ... + 11097952.

It is an arithmetic number, because the mean of its divisors is an integer number (530285807952).

Almost surely, 2^{2121121132303} is an apocalyptic number.

2121121132303 is a deficient number, since it is larger than the sum of its proper divisors (22099505).

2121121132303 is an equidigital number, since it uses as much as digits as its factorization.

2121121132303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22099504.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2121121132303 its reverse (3032311211212), we get a palindrome (5153432343515).

The spelling of 2121121132303 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred thirty-two thousand, three hundred three".