121202323203 has 32 divisors (see below), whose sum is σ = 175729022784. Its totient is φ = 73860820992.

The previous prime is 121202323189. The next prime is 121202323237. The reversal of 121202323203 is 302323202121.

It is a happy number.

It is not a de Polignac number, because 121202323203 - 2⁶ = 121202323139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121202323203.

It is not an unprimeable number, because it can be changed into a prime (121202323243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5246025 + ... + 5269077.

It is an arithmetic number, because the mean of its divisors is an integer number (5491531962).

Almost surely, 2^121202323203 is an apocalyptic number.

121202323203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121202323203 is a deficient number, since it is larger than the sum of its proper divisors (54526699581).

121202323203 is a wasteful number, since it uses less digits than its factorization.

121202323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24375.

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

Adding to 121202323203 its reverse (302323202121), we get a palindrome (423525525324).

The spelling of 121202323203 in words is "one hundred twenty-one billion, two hundred two million, three hundred twenty-three thousand, two hundred three".