1220421041311 has 2 divisors, whose sum is σ = 1220421041312. Its totient is φ = 1220421041310.

The previous prime is 1220421041291. The next prime is 1220421041317. The reversal of 1220421041311 is 1131401240221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220421041311 - 2¹³ = 1220421033119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220421041317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610210520655 + 610210520656.

It is an arithmetic number, because the mean of its divisors is an integer number (610210520656).

Almost surely, 2^{1220421041311} is an apocalyptic number.

1220421041311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220421041311 is an equidigital number, since it uses as much as digits as its factorization.

1220421041311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1220421041311 its reverse (1131401240221), we get a palindrome (2351822281532).

The spelling of 1220421041311 in words is "one trillion, two hundred twenty billion, four hundred twenty-one million, forty-one thousand, three hundred eleven".