121220121102 has 16 divisors (see below), whose sum is σ = 242980203600. Its totient is φ = 40316713472.

The previous prime is 121220121073. The next prime is 121220121149. The reversal of 121220121102 is 201121022121.

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, 22495473 + ... + 22500860.

It is an arithmetic number, because the mean of its divisors is an integer number (15186262725).

Almost surely, 2^121220121102 is an apocalyptic number.

121220121102 is an abundant number, since it is smaller than the sum of its proper divisors (121760082498).

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

121220121102 is a wasteful number, since it uses less digits than its factorization.

121220121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44996787.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121220121102 its reverse (201121022121), we get a palindrome (322341143223).

The spelling of 121220121102 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred two".