212122221041 has 2 divisors, whose sum is σ = 212122221042. Its totient is φ = 212122221040.

The previous prime is 212122221023. The next prime is 212122221067. The reversal of 212122221041 is 140122221212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130540580416 + 81581640625 = 361304^2 + 285625^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122221041 - 2¹⁸ = 212121958897 is a prime.

It is not a weakly prime, because it can be changed into another prime (212122271041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061110520 + 106061110521.

It is an arithmetic number, because the mean of its divisors is an integer number (106061110521).

Almost surely, 2^212122221041 is an apocalyptic number.

It is an amenable number.

212122221041 is a deficient number, since it is larger than the sum of its proper divisors (1).

212122221041 is an equidigital number, since it uses as much as digits as its factorization.

212122221041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212122221041 its reverse (140122221212), we get a palindrome (352244442253).

The spelling of 212122221041 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, forty-one".