2113031221001 has 4 divisors (see below), whose sum is σ = 2113131771600. Its totient is φ = 2112930670404.

The previous prime is 2113031220997. The next prime is 2113031221061. The reversal of 2113031221001 is 1001221303112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2113031221001 - 2² = 2113031220997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113031221061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50243771 + ... + 50285808.

It is an arithmetic number, because the mean of its divisors is an integer number (528282942900).

Almost surely, 2^{2113031221001} is an apocalyptic number.

It is an amenable number.

2113031221001 is a deficient number, since it is larger than the sum of its proper divisors (100550599).

2113031221001 is a wasteful number, since it uses less digits than its factorization.

2113031221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100550598.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2113031221001 its reverse (1001221303112), we get a palindrome (3114252524113).

The spelling of 2113031221001 in words is "two trillion, one hundred thirteen billion, thirty-one million, two hundred twenty-one thousand, one".