121120110110220 has 192 divisors, whose sum is σ = 385875197568000. Its totient is φ = 28140012555264.

The previous prime is 121120110110203. The next prime is 121120110110221. The reversal of 121120110110220 is 22011011021121.

It is a happy number.

It is a super-2 number, since 2×121120110110220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121120110110220.

It is not an unprimeable number, because it can be changed into a prime (121120110110221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11204400 + ... + 19177559.

It is an arithmetic number, because the mean of its divisors is an integer number (2009766654000).

Almost surely, 2^{121120110110220} is an apocalyptic number.

121120110110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121120110110220 is an abundant number, since it is smaller than the sum of its proper divisors (264755087457780).

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

121120110110220 is a wasteful number, since it uses less digits than its factorization.

121120110110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30382272 (or 30382270 counting only the distinct ones).

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

Adding to 121120110110220 its reverse (22011011021121), we get a palindrome (143131121131341).

The spelling of 121120110110220 in words is "one hundred twenty-one trillion, one hundred twenty billion, one hundred ten million, one hundred ten thousand, two hundred twenty".