121220200021112 has 32 divisors (see below), whose sum is σ = 231577424232480. Its totient is φ = 59466231077760.

The previous prime is 121220200021093. The next prime is 121220200021139. The reversal of 121220200021112 is 211120002022121.

It is a super-4 number, since 4×121220200021112⁴ (a number of 57 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110109062 + ... + 111204522.

It is an arithmetic number, because the mean of its divisors is an integer number (7236794507265).

Almost surely, 2^{121220200021112} is an apocalyptic number.

It is an amenable number.

121220200021112 is a deficient number, since it is larger than the sum of its proper divisors (110357224211368).

121220200021112 is a wasteful number, since it uses less digits than its factorization.

121220200021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356503 (or 1356499 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121220200021112 its reverse (211120002022121), we get a palindrome (332340202043233).

The spelling of 121220200021112 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred million, twenty-one thousand, one hundred twelve".