121003110220 has 48 divisors (see below), whose sum is σ = 260180968320. Its totient is φ = 47249510144.

The previous prime is 121003110209. The next prime is 121003110229. The reversal of 121003110220 is 22011300121.

It is a self number, because there is not a number n which added to its sum of digits gives 121003110220.

It is not an unprimeable number, because it can be changed into a prime (121003110229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200202 + ... + 531118.

It is an arithmetic number, because the mean of its divisors is an integer number (5420436840).

Almost surely, 2^121003110220 is an apocalyptic number.

121003110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121003110220 is an abundant number, since it is smaller than the sum of its proper divisors (139177858100).

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

121003110220 is a wasteful number, since it uses less digits than its factorization.

121003110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331362 (or 331360 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121003110220 its reverse (22011300121), we get a palindrome (143014410341).

The spelling of 121003110220 in words is "one hundred twenty-one billion, three million, one hundred ten thousand, two hundred twenty".