121200202102 has 16 divisors (see below), whose sum is σ = 208064841120. Its totient is φ = 51869677248.

The previous prime is 121200202091. The next prime is 121200202111. The reversal of 121200202102 is 201202002121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6095263 + ... + 6115114.

It is an arithmetic number, because the mean of its divisors is an integer number (13004052570).

Almost surely, 2^121200202102 is an apocalyptic number.

121200202102 is a deficient number, since it is larger than the sum of its proper divisors (86864639018).

121200202102 is a wasteful number, since it uses less digits than its factorization.

121200202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12211095.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121200202102 its reverse (201202002121), we get a palindrome (322402204223).

The spelling of 121200202102 in words is "one hundred twenty-one billion, two hundred million, two hundred two thousand, one hundred two".