1223022020131 has 4 divisors (see below), whose sum is σ = 1224321725664. Its totient is φ = 1221722314600.

The previous prime is 1223022020117. The next prime is 1223022020137. The reversal of 1223022020131 is 1310202203221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223022020131 - 2³³ = 1214432085539 is a prime.

It is a super-2 number, since 2×1223022020131² (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 = 1223022020099 and 1223022020108.

It is not an unprimeable number, because it can be changed into a prime (1223022020137) 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 3 ways as a sum of consecutive naturals, for example, 649851355 + ... + 649853236.

It is an arithmetic number, because the mean of its divisors is an integer number (306080431416).

Almost surely, 2^{1223022020131} is an apocalyptic number.

1223022020131 is a deficient number, since it is larger than the sum of its proper divisors (1299705533).

1223022020131 is an equidigital number, since it uses as much as digits as its factorization.

1223022020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299705532.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1223022020131 its reverse (1310202203221), we get a palindrome (2533224223352).

The spelling of 1223022020131 in words is "one trillion, two hundred twenty-three billion, twenty-two million, twenty thousand, one hundred thirty-one".