221211140123 has 2 divisors, whose sum is σ = 221211140124. Its totient is φ = 221211140122.

The previous prime is 221211140093. The next prime is 221211140149. The reversal of 221211140123 is 321041112122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221211140123 - 2⁸ = 221211139867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221211140095 and 221211140104.

It is not a weakly prime, because it can be changed into another prime (221211170123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605570061 + 110605570062.

It is an arithmetic number, because the mean of its divisors is an integer number (110605570062).

Almost surely, 2^221211140123 is an apocalyptic number.

221211140123 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211140123 is an equidigital number, since it uses as much as digits as its factorization.

221211140123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 221211140123 its reverse (321041112122), we get a palindrome (542252252245).

The spelling of 221211140123 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred forty thousand, one hundred twenty-three".