221122211121191 has 8 divisors (see below), whose sum is σ = 222080503258224. Its totient is φ = 220163998213440.

The previous prime is 221122211121181. The next prime is 221122211121193. The reversal of 221122211121191 is 191121112221122.

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

It is a cyclic number.

It is not a de Polignac number, because 221122211121191 - 2³⁰ = 221121137379367 is a prime.

It is a super-2 number, since 2×221122211121191² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122211121193) 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 7 ways as a sum of consecutive naturals, for example, 14209976 + ... + 25380461.

It is an arithmetic number, because the mean of its divisors is an integer number (27760062907278).

Almost surely, 2^{221122211121191} is an apocalyptic number.

221122211121191 is a deficient number, since it is larger than the sum of its proper divisors (958292137033).

221122211121191 is a wasteful number, since it uses less digits than its factorization.

221122211121191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39614641.

The product of its digits is 576, while the sum is 29.

The spelling of 221122211121191 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred eleven million, one hundred twenty-one thousand, one hundred ninety-one".