2121321230233 has 16 divisors (see below), whose sum is σ = 2170215843840. Its totient is φ = 2073000028176.

The previous prime is 2121321230183. The next prime is 2121321230261. The reversal of 2121321230233 is 3320321231212.

It is a de Polignac number, because none of the positive numbers 2^k-2121321230233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121321230198 and 2121321230207.

It is not an unprimeable number, because it can be changed into a prime (2121321230033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3959566 + ... + 4463272.

It is an arithmetic number, because the mean of its divisors is an integer number (135638490240).

Almost surely, 2^{2121321230233} is an apocalyptic number.

It is an amenable number.

2121321230233 is a deficient number, since it is larger than the sum of its proper divisors (48894613607).

2121321230233 is a wasteful number, since it uses less digits than its factorization.

2121321230233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504276.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 2121321230233 its reverse (3320321231212), we get a palindrome (5441642461445).

The spelling of 2121321230233 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-one million, two hundred thirty thousand, two hundred thirty-three".