221000222100247 has 2 divisors, whose sum is σ = 221000222100248. Its totient is φ = 221000222100246.

The previous prime is 221000222100187. The next prime is 221000222100293. The reversal of 221000222100247 is 742001222000122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221000222100247 is a prime.

It is a super-2 number, since 2×221000222100247² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221000222104247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500111050123 + 110500111050124.

It is an arithmetic number, because the mean of its divisors is an integer number (110500111050124).

Almost surely, 2^{221000222100247} is an apocalyptic number.

221000222100247 is a deficient number, since it is larger than the sum of its proper divisors (1).

221000222100247 is an equidigital number, since it uses as much as digits as its factorization.

221000222100247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

Adding to 221000222100247 its reverse (742001222000122), we get a palindrome (963001444100369).

The spelling of 221000222100247 in words is "two hundred twenty-one trillion, two hundred twenty-two million, one hundred thousand, two hundred forty-seven".