2211221222191 has 8 divisors (see below), whose sum is σ = 2220237048960. Its totient is φ = 2202220588248.

The previous prime is 2211221222131. The next prime is 2211221222239. The reversal of 2211221222191 is 1912221221122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211221222191 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 (2211221222101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3506481 + ... + 4088746.

It is an arithmetic number, because the mean of its divisors is an integer number (277529631120).

Almost surely, 2^{2211221222191} is an apocalyptic number.

2211221222191 is a deficient number, since it is larger than the sum of its proper divisors (9015826769).

2211221222191 is an equidigital number, since it uses as much as digits as its factorization.

2211221222191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596413.

The product of its digits is 1152, while the sum is 28.

The spelling of 2211221222191 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred ninety-one".