121112221212102 has 16 divisors (see below), whose sum is σ = 242238534459120. Its totient is φ = 40368391731552.

The previous prime is 121112221211929. The next prime is 121112221212121. The reversal of 121112221212102 is 201212122211121.

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, 587056393 + ... + 587262660.

It is an arithmetic number, because the mean of its divisors is an integer number (15139908403695).

Almost surely, 2^{121112221212102} is an apocalyptic number.

121112221212102 is an abundant number, since it is smaller than the sum of its proper divisors (121126313247018).

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

121112221212102 is a wasteful number, since it uses less digits than its factorization.

121112221212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174336247.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121112221212102 its reverse (201212122211121), we get a palindrome (322324343423223).

The spelling of 121112221212102 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, one hundred two".