121200102104 has 8 divisors (see below), whose sum is σ = 227250191460. Its totient is φ = 60600051048.

The previous prime is 121200102097. The next prime is 121200102109. The reversal of 121200102104 is 401201002121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200102109) 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 as a sum of consecutive naturals, namely, 7575006374 + ... + 7575006389.

Almost surely, 2^121200102104 is an apocalyptic number.

It is an amenable number.

121200102104 is a deficient number, since it is larger than the sum of its proper divisors (106050089356).

121200102104 is a wasteful number, since it uses less digits than its factorization.

121200102104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15150012769 (or 15150012765 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121200102104 its reverse (401201002121), we get a palindrome (522401104225).

The spelling of 121200102104 in words is "one hundred twenty-one billion, two hundred million, one hundred two thousand, one hundred four".