2112111221001 has 8 divisors (see below), whose sum is σ = 2816298508224. Its totient is φ = 1407999040560.

The previous prime is 2112111220981. The next prime is 2112111221039. The reversal of 2112111221001 is 1001221112112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2112111221001 - 2⁵ = 2112111220969 is a prime.

It is a super-2 number, since 2×2112111221001² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112111221081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18711045 + ... + 18823586.

It is an arithmetic number, because the mean of its divisors is an integer number (352037313528).

Almost surely, 2^{2112111221001} is an apocalyptic number.

It is an amenable number.

2112111221001 is a deficient number, since it is larger than the sum of its proper divisors (704187287223).

2112111221001 is a wasteful number, since it uses less digits than its factorization.

2112111221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37553391.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2112111221001 its reverse (1001221112112), we get a palindrome (3113332333113).

The spelling of 2112111221001 in words is "two trillion, one hundred twelve billion, one hundred eleven million, two hundred twenty-one thousand, one".