121110110221002 has 128 divisors (see below), whose sum is σ = 285249644789760. Its totient is φ = 33563365053120.

The previous prime is 121110110220971. The next prime is 121110110221039. The reversal of 121110110221002 is 200122011011121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 230128627 + ... + 230654297.

It is an arithmetic number, because the mean of its divisors is an integer number (2228512849920).

Almost surely, 2^{121110110221002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121110110221002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142624822394880).

121110110221002 is an abundant number, since it is smaller than the sum of its proper divisors (164139534568758).

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

121110110221002 is a wasteful number, since it uses less digits than its factorization.

121110110221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526776.

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

Adding to 121110110221002 its reverse (200122011011121), we get a palindrome (321232121232123).

The spelling of 121110110221002 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred ten million, two hundred twenty-one thousand, two".