220131321123 has 16 divisors (see below), whose sum is σ = 336713642496. Its totient is φ = 125311036800.

The previous prime is 220131321121. The next prime is 220131321127. The reversal of 220131321123 is 321123131022.

It is not a de Polignac number, because 220131321123 - 2¹ = 220131321121 is a prime.

It is a super-2 number, since 2×220131321123² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

220131321123 is a modest number, since divided by 321123 gives 220131 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 220131321123.

It is not an unprimeable number, because it can be changed into a prime (220131321121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19923078 + ... + 19934123.

It is an arithmetic number, because the mean of its divisors is an integer number (21044602656).

Almost surely, 2^220131321123 is an apocalyptic number.

220131321123 is a deficient number, since it is larger than the sum of its proper divisors (116582321373).

220131321123 is a wasteful number, since it uses less digits than its factorization.

220131321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39857474.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 220131321123 its reverse (321123131022), we get a palindrome (541254452145).

The spelling of 220131321123 in words is "two hundred twenty billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-three".