121200233223 has 16 divisors (see below), whose sum is σ = 171690922080. Its totient is φ = 75905456256.

The previous prime is 121200233213. The next prime is 121200233227. The reversal of 121200233223 is 322332002121.

It is a happy number.

It is not a de Polignac number, because 121200233223 - 2¹² = 121200229127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121200233223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200233227) 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, 18822540 + ... + 18828977.

It is an arithmetic number, because the mean of its divisors is an integer number (10730682630).

Almost surely, 2^121200233223 is an apocalyptic number.

121200233223 is a deficient number, since it is larger than the sum of its proper divisors (50490688857).

121200233223 is a wasteful number, since it uses less digits than its factorization.

121200233223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37651586.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 121200233223 its reverse (322332002121), we get a palindrome (443532235344).

The spelling of 121200233223 in words is "one hundred twenty-one billion, two hundred million, two hundred thirty-three thousand, two hundred twenty-three".