121200202202102 has 4 divisors (see below), whose sum is σ = 181800303303156. Its totient is φ = 60600101101050.

The previous prime is 121200202202041. The next prime is 121200202202111. The reversal of 121200202202102 is 201202202002121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30300050550524 + ... + 30300050550527.

It is an arithmetic number, because the mean of its divisors is an integer number (45450075825789).

Almost surely, 2^{121200202202102} is an apocalyptic number.

121200202202102 is a deficient number, since it is larger than the sum of its proper divisors (60600101101054).

121200202202102 is an equidigital number, since it uses as much as digits as its factorization.

121200202202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60600101101053.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121200202202102 its reverse (201202202002121), we get a palindrome (322402404204223).

The spelling of 121200202202102 in words is "one hundred twenty-one trillion, two hundred billion, two hundred two million, two hundred two thousand, one hundred two".