1201220221141 has 2 divisors, whose sum is σ = 1201220221142. Its totient is φ = 1201220221140.

The previous prime is 1201220221063. The next prime is 1201220221163. The reversal of 1201220221141 is 1411220221021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 786909152241 + 414311068900 = 887079^2 + 643670^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201220221141 - 2¹¹ = 1201220219093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201220521141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610110570 + 600610110571.

It is an arithmetic number, because the mean of its divisors is an integer number (600610110571).

Almost surely, 2^{1201220221141} is an apocalyptic number.

It is an amenable number.

1201220221141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201220221141 is an equidigital number, since it uses as much as digits as its factorization.

1201220221141 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 1201220221141 its reverse (1411220221021), we get a palindrome (2612440442162).

The spelling of 1201220221141 in words is "one trillion, two hundred one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred forty-one".