1220523323331 has 96 divisors (see below), whose sum is σ = 1887974400000. Its totient is φ = 698914344960.

The previous prime is 1220523323311. The next prime is 1220523323333. The reversal of 1220523323331 is 1333233250221.

It is not a de Polignac number, because 1220523323331 - 2⁹ = 1220523322819 is a prime.

It is a super-2 number, since 2×1220523323331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220523323333) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 733927806 + ... + 733929468.

It is an arithmetic number, because the mean of its divisors is an integer number (19666400000).

Almost surely, 2^{1220523323331} is an apocalyptic number.

1220523323331 is a deficient number, since it is larger than the sum of its proper divisors (667451076669).

1220523323331 is a wasteful number, since it uses less digits than its factorization.

1220523323331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 1220523323331 its reverse (1333233250221), we get a palindrome (2553756573552).

The spelling of 1220523323331 in words is "one trillion, two hundred twenty billion, five hundred twenty-three million, three hundred twenty-three thousand, three hundred thirty-one".