121211100102 has 16 divisors (see below), whose sum is σ = 244822421232. Its totient is φ = 40003663200.

The previous prime is 121211100083. The next prime is 121211100133. The reversal of 121211100102 is 201001112121.

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, 100008553 + ... + 100009764.

It is an arithmetic number, because the mean of its divisors is an integer number (15301401327).

Almost surely, 2^121211100102 is an apocalyptic number.

121211100102 is an abundant number, since it is smaller than the sum of its proper divisors (123611321130).

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

121211100102 is a wasteful number, since it uses less digits than its factorization.

121211100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200018423.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121211100102 its reverse (201001112121), we get a palindrome (322212212223).

The spelling of 121211100102 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred thousand, one hundred two".