1212210221041 has 2 divisors, whose sum is σ = 1212210221042. Its totient is φ = 1212210221040.

The previous prime is 1212210221009. The next prime is 1212210221087. The reversal of 1212210221041 is 1401220122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1204418451600 + 7791769441 = 1097460^2 + 88271^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212210221041 - 2⁵ = 1212210221009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212210221741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105110520 + 606105110521.

It is an arithmetic number, because the mean of its divisors is an integer number (606105110521).

Almost surely, 2^{1212210221041} is an apocalyptic number.

It is an amenable number.

1212210221041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212210221041 is an equidigital number, since it uses as much as digits as its factorization.

1212210221041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212210221041 its reverse (1401220122121), we get a palindrome (2613430343162).

The spelling of 1212210221041 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty-one thousand, forty-one".