112121221001 has 16 divisors (see below), whose sum is σ = 114749711424. Its totient is φ = 109525987584.

The previous prime is 112121220989. The next prime is 112121221033. The reversal of 112121221001 is 100122121211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112121221001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112121221501) 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, 4417790 + ... + 4443096.

It is an arithmetic number, because the mean of its divisors is an integer number (7171856964).

Almost surely, 2^112121221001 is an apocalyptic number.

It is an amenable number.

112121221001 is a deficient number, since it is larger than the sum of its proper divisors (2628490423).

112121221001 is a wasteful number, since it uses less digits than its factorization.

112121221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25960.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 112121221001 its reverse (100122121211), we get a palindrome (212243342212).

The spelling of 112121221001 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, one".