212221331123 has 2 divisors, whose sum is σ = 212221331124. Its totient is φ = 212221331122.

The previous prime is 212221331111. The next prime is 212221331141. The reversal of 212221331123 is 321133122212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212221331123 - 2¹⁰ = 212221330099 is a prime.

It is a super-2 number, since 2×212221331123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212221331323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110665561 + 106110665562.

It is an arithmetic number, because the mean of its divisors is an integer number (106110665562).

Almost surely, 2^212221331123 is an apocalyptic number.

212221331123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221331123 is an equidigital number, since it uses as much as digits as its factorization.

212221331123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

Adding to 212221331123 its reverse (321133122212), we get a palindrome (533354453335).

The spelling of 212221331123 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred thirty-one thousand, one hundred twenty-three".