1223122120131 has 8 divisors (see below), whose sum is σ = 1632901706944. Its totient is φ = 814378640040.

The previous prime is 1223122120111. The next prime is 1223122120133. The reversal of 1223122120131 is 1310212213221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223122120131 - 2⁶ = 1223122120067 is a prime.

It is a super-2 number, since 2×1223122120131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223122120098 and 1223122120107.

It is not an unprimeable number, because it can be changed into a prime (1223122120133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259023925 + ... + 259028646.

It is an arithmetic number, because the mean of its divisors is an integer number (204112713368).

Almost surely, 2^{1223122120131} is an apocalyptic number.

1223122120131 is a deficient number, since it is larger than the sum of its proper divisors (409779586813).

1223122120131 is an equidigital number, since it uses as much as digits as its factorization.

1223122120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518053361.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1223122120131 its reverse (1310212213221), we get a palindrome (2533334333352).

The spelling of 1223122120131 in words is "one trillion, two hundred twenty-three billion, one hundred twenty-two million, one hundred twenty thousand, one hundred thirty-one".