121221200102 has 8 divisors (see below), whose sum is σ = 183632115312. Its totient is φ = 60010495000.

The previous prime is 121221200071. The next prime is 121221200143. The reversal of 121221200102 is 201002122121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300052274 + ... + 300052677.

It is an arithmetic number, because the mean of its divisors is an integer number (22954014414).

Almost surely, 2^121221200102 is an apocalyptic number.

121221200102 is a deficient number, since it is larger than the sum of its proper divisors (62410915210).

121221200102 is a wasteful number, since it uses less digits than its factorization.

121221200102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600105054.

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

Adding to 121221200102 its reverse (201002122121), we get a palindrome (322223322223).

The spelling of 121221200102 in words is "one hundred twenty-one billion, two hundred twenty-one million, two hundred thousand, one hundred two".