1201232220311 has 2 divisors, whose sum is σ = 1201232220312. Its totient is φ = 1201232220310.

The previous prime is 1201232220277. The next prime is 1201232220337. The reversal of 1201232220311 is 1130222321021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201232220311 - 2¹⁸ = 1201231958167 is a prime.

It is a super-2 number, since 2×1201232220311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201232220611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600616110155 + 600616110156.

It is an arithmetic number, because the mean of its divisors is an integer number (600616110156).

Almost surely, 2^{1201232220311} is an apocalyptic number.

1201232220311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201232220311 is an equidigital number, since it uses as much as digits as its factorization.

1201232220311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1201232220311 its reverse (1130222321021), we get a palindrome (2331454541332).

The spelling of 1201232220311 in words is "one trillion, two hundred one billion, two hundred thirty-two million, two hundred twenty thousand, three hundred eleven".