1221422332423 has 16 divisors (see below), whose sum is σ = 1341864633600. Its totient is φ = 1106614967040.

The previous prime is 1221422332399. The next prime is 1221422332433. The reversal of 1221422332423 is 3242332241221.

It is a cyclic number.

It is not a de Polignac number, because 1221422332423 - 2¹³ = 1221422324231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221422332433) 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 in 15 ways as a sum of consecutive naturals, for example, 2043168 + ... + 2572426.

It is an arithmetic number, because the mean of its divisors is an integer number (83866539600).

Almost surely, 2^{1221422332423} is an apocalyptic number.

1221422332423 is a deficient number, since it is larger than the sum of its proper divisors (120442301177).

1221422332423 is a wasteful number, since it uses less digits than its factorization.

1221422332423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534582.

The product of its digits is 27648, while the sum is 31.

Adding to 1221422332423 its reverse (3242332241221), we get a palindrome (4463754573644).

The spelling of 1221422332423 in words is "one trillion, two hundred twenty-one billion, four hundred twenty-two million, three hundred thirty-two thousand, four hundred twenty-three".