1322220231523 has 16 divisors (see below), whose sum is σ = 1412266786560. Its totient is φ = 1235156428800.

The previous prime is 1322220231469. The next prime is 1322220231539. The reversal of 1322220231523 is 3251320222231.

It is a cyclic number.

It is not a de Polignac number, because 1322220231523 - 2²¹ = 1322218134371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322220231491 and 1322220231500.

It is not an unprimeable number, because it can be changed into a prime (1322220231583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3729403 + ... + 4068523.

It is an arithmetic number, because the mean of its divisors is an integer number (88266674160).

Almost surely, 2^{1322220231523} is an apocalyptic number.

1322220231523 is a deficient number, since it is larger than the sum of its proper divisors (90046555037).

1322220231523 is a wasteful number, since it uses less digits than its factorization.

1322220231523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343518.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 1322220231523 its reverse (3251320222231), we get a palindrome (4573540453754).

The spelling of 1322220231523 in words is "one trillion, three hundred twenty-two billion, two hundred twenty million, two hundred thirty-one thousand, five hundred twenty-three".