221200212131323 has 2 divisors, whose sum is σ = 221200212131324. Its totient is φ = 221200212131322.

The previous prime is 221200212131231. The next prime is 221200212131387. The reversal of 221200212131323 is 323131212002122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221200212131323 - 2¹³ = 221200212123131 is a prime.

It is not a weakly prime, because it can be changed into another prime (221200212161323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600106065661 + 110600106065662.

It is an arithmetic number, because the mean of its divisors is an integer number (110600106065662).

Almost surely, 2^{221200212131323} is an apocalyptic number.

221200212131323 is a deficient number, since it is larger than the sum of its proper divisors (1).

221200212131323 is an equidigital number, since it uses as much as digits as its factorization.

221200212131323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 221200212131323 its reverse (323131212002122), we get a palindrome (544331424133445).

The spelling of 221200212131323 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twelve million, one hundred thirty-one thousand, three hundred twenty-three".