222166205011231 has 8 divisors (see below), whose sum is σ = 239420576504480. Its totient is φ = 204935356863072.

The previous prime is 222166205011193. The next prime is 222166205011241. The reversal of 222166205011231 is 132110502661222.

It is a happy number.

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 222166205011231 - 2¹¹ = 222166205009183 is a prime.

It is a super-2 number, since 2×222166205011231² (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 (222166205011241) 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, 5880816651 + ... + 5880854428.

It is an arithmetic number, because the mean of its divisors is an integer number (29927572063060).

Almost surely, 2^{222166205011231} is an apocalyptic number.

222166205011231 is a deficient number, since it is larger than the sum of its proper divisors (17254371493249).

222166205011231 is a wasteful number, since it uses less digits than its factorization.

222166205011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11761672545.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 222166205011231 its reverse (132110502661222), we get a palindrome (354276707672453).

The spelling of 222166205011231 in words is "two hundred twenty-two trillion, one hundred sixty-six billion, two hundred five million, eleven thousand, two hundred thirty-one".