2303212312121 has 4 divisors (see below), whose sum is σ = 2632242642432. Its totient is φ = 1974181981812.

The previous prime is 2303212312109. The next prime is 2303212312127. The reversal of 2303212312121 is 1212132123032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2303212312121 - 2¹⁸ = 2303212049977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2303212312127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164515165145 + ... + 164515165158.

It is an arithmetic number, because the mean of its divisors is an integer number (658060660608).

Almost surely, 2^{2303212312121} is an apocalyptic number.

It is an amenable number.

2303212312121 is a deficient number, since it is larger than the sum of its proper divisors (329030330311).

2303212312121 is an equidigital number, since it uses as much as digits as its factorization.

2303212312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329030330310.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2303212312121 its reverse (1212132123032), we get a palindrome (3515344435153).

The spelling of 2303212312121 in words is "two trillion, three hundred three billion, two hundred twelve million, three hundred twelve thousand, one hundred twenty-one".