121121210212112 has 160 divisors (see below), whose sum is σ = 264752398761984. Its totient is φ = 53200009958400.

The previous prime is 121121210212069. The next prime is 121121210212133. The reversal of 121121210212112 is 211212012121121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5101332113 + ... + 5101355855.

Almost surely, 2^{121121210212112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121121210212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132376199380992).

121121210212112 is an abundant number, since it is smaller than the sum of its proper divisors (143631188549872).

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

121121210212112 is a wasteful number, since it uses less digits than its factorization.

121121210212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30517 (or 30511 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 121121210212112 its reverse (211212012121121), we get a palindrome (332333222333233).

The spelling of 121121210212112 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, one hundred twelve".