121210202323 has 16 divisors (see below), whose sum is σ = 139169157120. Its totient is φ = 103412270016.

The previous prime is 121210202279. The next prime is 121210202329. The reversal of 121210202323 is 323202012121.

It is a cyclic number.

It is not a de Polignac number, because 121210202323 - 2³³ = 112620267731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121210202323.

It is not an unprimeable number, because it can be changed into a prime (121210202329) 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, 10670815 + ... + 10682167.

It is an arithmetic number, because the mean of its divisors is an integer number (8698072320).

Almost surely, 2^121210202323 is an apocalyptic number.

121210202323 is a deficient number, since it is larger than the sum of its proper divisors (17958954797).

121210202323 is a wasteful number, since it uses less digits than its factorization.

121210202323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18306.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121210202323 its reverse (323202012121), we get a palindrome (444412214444).

The spelling of 121210202323 in words is "one hundred twenty-one billion, two hundred ten million, two hundred two thousand, three hundred twenty-three".