2211021111001 has 16 divisors (see below), whose sum is σ = 2348009781696. Its totient is φ = 2074809309696.

The previous prime is 2211021110953. The next prime is 2211021111017. The reversal of 2211021111001 is 1001111201122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2211021111001 - 2²¹ = 2211019013849 is a prime.

It is a super-2 number, since 2×2211021111001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211021111071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10045210 + ... + 10262956.

It is an arithmetic number, because the mean of its divisors is an integer number (146750611356).

Almost surely, 2^{2211021111001} is an apocalyptic number.

It is an amenable number.

2211021111001 is a deficient number, since it is larger than the sum of its proper divisors (136988670695).

2211021111001 is a wasteful number, since it uses less digits than its factorization.

2211021111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219528.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2211021111001 its reverse (1001111201122), we get a palindrome (3212132312123).

The spelling of 2211021111001 in words is "two trillion, two hundred eleven billion, twenty-one million, one hundred eleven thousand, one".