1221022001141 has 2 divisors, whose sum is σ = 1221022001142. Its totient is φ = 1221022001140.

The previous prime is 1221022001117. The next prime is 1221022001153. The reversal of 1221022001141 is 1411002201221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 665780930116 + 555241071025 = 815954^2 + 745145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221022001141 - 2²⁶ = 1220954892277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221012001141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610511000570 + 610511000571.

It is an arithmetic number, because the mean of its divisors is an integer number (610511000571).

Almost surely, 2^{1221022001141} is an apocalyptic number.

It is an amenable number.

1221022001141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221022001141 is an equidigital number, since it uses as much as digits as its factorization.

1221022001141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1221022001141 its reverse (1411002201221), we get a palindrome (2632024202362).

The spelling of 1221022001141 in words is "one trillion, two hundred twenty-one billion, twenty-two million, one thousand, one hundred forty-one".