121121012220112 has 80 divisors (see below), whose sum is σ = 247328001423360. Its totient is φ = 57302312651136.

The previous prime is 121121012220077. The next prime is 121121012220137. The reversal of 121121012220112 is 211022210121121.

It is a happy number.

It is a super-3 number, since 3×121121012220112³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 121121012220112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3839367123 + ... + 3839398669.

It is an arithmetic number, because the mean of its divisors is an integer number (3091600017792).

Almost surely, 2^{121121012220112} is an apocalyptic number.

It is an amenable number.

121121012220112 is an abundant number, since it is smaller than the sum of its proper divisors (126206989203248).

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

121121012220112 is a wasteful number, since it uses less digits than its factorization.

121121012220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46760 (or 46754 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121121012220112 its reverse (211022210121121), we get a palindrome (332143222341233).

The spelling of 121121012220112 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twelve million, two hundred twenty thousand, one hundred twelve".