121200100202 has 16 divisors (see below), whose sum is σ = 189759471552. Its totient is φ = 57948469920.

The previous prime is 121200100187. The next prime is 121200100207. The reversal of 121200100202 is 202001002121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121200100207) 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 7 ways as a sum of consecutive naturals, for example, 220499 + ... + 539462.

It is an arithmetic number, because the mean of its divisors is an integer number (11859966972).

Almost surely, 2^121200100202 is an apocalyptic number.

121200100202 is a deficient number, since it is larger than the sum of its proper divisors (68559371350).

121200100202 is a wasteful number, since it uses less digits than its factorization.

121200100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763453.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121200100202 its reverse (202001002121), we get a palindrome (323201102323).

The spelling of 121200100202 in words is "one hundred twenty-one billion, two hundred million, one hundred thousand, two hundred two".