2121200123233 has 4 divisors (see below), whose sum is σ = 2121203638980. Its totient is φ = 2121196607488.

The previous prime is 2121200123227. The next prime is 2121200123239. The reversal of 2121200123233 is 3323210021212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2121200123227) and next prime (2121200123239).

It can be written as a sum of positive squares in 2 ways, for example, as 231391785024 + 1889808338209 = 481032^2 + 1374703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121200123233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121200123239) 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, 597568 + ... + 2144641.

It is an arithmetic number, because the mean of its divisors is an integer number (530300909745).

Almost surely, 2^{2121200123233} is an apocalyptic number.

It is an amenable number.

2121200123233 is a deficient number, since it is larger than the sum of its proper divisors (3515747).

2121200123233 is an equidigital number, since it uses as much as digits as its factorization.

2121200123233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515746.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2121200123233 its reverse (3323210021212), we get a palindrome (5444410144445).

The spelling of 2121200123233 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred twenty-three thousand, two hundred thirty-three".