221231103412211 has 2 divisors, whose sum is σ = 221231103412212. Its totient is φ = 221231103412210.

The previous prime is 221231103412183. The next prime is 221231103412289. The reversal of 221231103412211 is 112214301132122.

221231103412211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221231103412211 - 2¹⁰ = 221231103411187 is a prime.

It is a super-2 number, since 2×221231103412211² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221231103411211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110615551706105 + 110615551706106.

It is an arithmetic number, because the mean of its divisors is an integer number (110615551706106).

Almost surely, 2^{221231103412211} is an apocalyptic number.

221231103412211 is a deficient number, since it is larger than the sum of its proper divisors (1).

221231103412211 is an equidigital number, since it uses as much as digits as its factorization.

221231103412211 is an evil number, because the sum of its binary digits is even.

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

Adding to 221231103412211 its reverse (112214301132122), we get a palindrome (333445404544333).

The spelling of 221231103412211 in words is "two hundred twenty-one trillion, two hundred thirty-one billion, one hundred three million, four hundred twelve thousand, two hundred eleven".