2221122001111 has 4 divisors (see below), whose sum is σ = 2391977539672. Its totient is φ = 2050266462552.

The previous prime is 2221122001037. The next prime is 2221122001123. The reversal of 2221122001111 is 1111002211222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221122001111 - 2²⁹ = 2220585130199 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221122001711) 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, 85427769261 + ... + 85427769286.

It is an arithmetic number, because the mean of its divisors is an integer number (597994384918).

Almost surely, 2^{2221122001111} is an apocalyptic number.

2221122001111 is a deficient number, since it is larger than the sum of its proper divisors (170855538561).

2221122001111 is a wasteful number, since it uses less digits than its factorization.

2221122001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170855538560.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2221122001111 its reverse (1111002211222), we get a palindrome (3332124212333).

The spelling of 2221122001111 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two million, one thousand, one hundred eleven".