2221122022111 has 4 divisors (see below), whose sum is σ = 2221709779800. Its totient is φ = 2220534264424.

The previous prime is 2221122022103. The next prime is 2221122022117. The reversal of 2221122022111 is 1112202211222.

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 2221122022111 - 2³ = 2221122022103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221122022117) 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 3 ways as a sum of consecutive naturals, for example, 293873176 + ... + 293880733.

It is an arithmetic number, because the mean of its divisors is an integer number (555427444950).

Almost surely, 2^{2221122022111} is an apocalyptic number.

2221122022111 is a deficient number, since it is larger than the sum of its proper divisors (587757689).

2221122022111 is an equidigital number, since it uses as much as digits as its factorization.

2221122022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587757688.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2221122022111 its reverse (1112202211222), we get a palindrome (3333324233333).

The spelling of 2221122022111 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty-two thousand, one hundred eleven".