2221122022091 has 12 divisors (see below), whose sum is σ = 2584262392128. Its totient is φ = 1903444410672.

The previous prime is 2221122022079. The next prime is 2221122022103. The reversal of 2221122022091 is 1902202211222.

It is an interprime number because it is at equal distance from previous prime (2221122022079) and next prime (2221122022103).

It is not a de Polignac number, because 2221122022091 - 2¹⁸ = 2221121759947 is a prime.

It is a super-2 number, since 2×2221122022091² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221122022091.

It is not an unprimeable number, because it can be changed into a prime (2221122021091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4206116 + ... + 4704641.

It is an arithmetic number, because the mean of its divisors is an integer number (215355199344).

Almost surely, 2^{2221122022091} is an apocalyptic number.

2221122022091 is a deficient number, since it is larger than the sum of its proper divisors (363140370037).

2221122022091 is an equidigital number, since it uses as much as digits as its factorization.

2221122022091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8915858 (or 8915851 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 2221122022091 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty-two thousand, ninety-one".