121211210100102 has 32 divisors (see below), whose sum is σ = 242569821823488. Its totient is φ = 40379177208096.

The previous prime is 121211210100059. The next prime is 121211210100119. The reversal of 121211210100102 is 201001012112121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64426083 + ... + 66280785.

It is an arithmetic number, because the mean of its divisors is an integer number (7580306931984).

Almost surely, 2^{121211210100102} is an apocalyptic number.

121211210100102 is an abundant number, since it is smaller than the sum of its proper divisors (121358611723386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121211210100102 is a wasteful number, since it uses less digits than its factorization.

121211210100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861324.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121211210100102 its reverse (201001012112121), we get a palindrome (322212222212223).

The spelling of 121211210100102 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred ten million, one hundred thousand, one hundred two".