1000121220112 has 80 divisors (see below), whose sum is σ = 2262003793920. Its totient is φ = 419442251904.

The previous prime is 1000121220089. The next prime is 1000121220113. The reversal of 1000121220112 is 2110221210001.

It is a junction number, because it is equal to n+sod(n) for n = 1000121220092 and 1000121220101.

It is not an unprimeable number, because it can be changed into a prime (1000121220113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62944233 + ... + 62960119.

It is an arithmetic number, because the mean of its divisors is an integer number (28275047424).

Almost surely, 2^{1000121220112} is an apocalyptic number.

It is an amenable number.

1000121220112 is an abundant number, since it is smaller than the sum of its proper divisors (1261882573808).

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

1000121220112 is a wasteful number, since it uses less digits than its factorization.

1000121220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27908 (or 27902 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1000121220112 its reverse (2110221210001), we get a palindrome (3110342430113).

The spelling of 1000121220112 in words is "one trillion, one hundred twenty-one million, two hundred twenty thousand, one hundred twelve".