121203213233 has 4 divisors (see below), whose sum is σ = 121235289840. Its totient is φ = 121171136628.

The previous prime is 121203213221. The next prime is 121203213283. The reversal of 121203213233 is 332312302121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 332312302121 = 99529 ⋅3338849.

It is a cyclic number.

It is not a de Polignac number, because 121203213233 - 2²² = 121199018929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121203213199 and 121203213208.

It is not an unprimeable number, because it can be changed into a prime (121203213283) 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, 16032635 + ... + 16040192.

It is an arithmetic number, because the mean of its divisors is an integer number (30308822460).

Almost surely, 2^121203213233 is an apocalyptic number.

It is an amenable number.

121203213233 is a deficient number, since it is larger than the sum of its proper divisors (32076607).

121203213233 is an equidigital number, since it uses as much as digits as its factorization.

121203213233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32076606.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 121203213233 its reverse (332312302121), we get a palindrome (453515515354).

The spelling of 121203213233 in words is "one hundred twenty-one billion, two hundred three million, two hundred thirteen thousand, two hundred thirty-three".