121200210202102 has 16 divisors (see below), whose sum is σ = 182561770307520. Its totient is φ = 60346288945152.

The previous prime is 121200210202073. The next prime is 121200210202103. The reversal of 121200210202102 is 201202012002121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200210202103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160783108 + ... + 161535160.

It is an arithmetic number, because the mean of its divisors is an integer number (11410110644220).

Almost surely, 2^{121200210202102} is an apocalyptic number.

121200210202102 is a deficient number, since it is larger than the sum of its proper divisors (61361560105418).

121200210202102 is a wasteful number, since it uses less digits than its factorization.

121200210202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089447.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121200210202102 its reverse (201202012002121), we get a palindrome (322402222204223).

The spelling of 121200210202102 in words is "one hundred twenty-one trillion, two hundred billion, two hundred ten million, two hundred two thousand, one hundred two".