1220123232031 has 16 divisors (see below), whose sum is σ = 1332756713088. Its totient is φ = 1107776023200.

The previous prime is 1220123232019. The next prime is 1220123232043. The reversal of 1220123232031 is 1302323210221.

It is an interprime number because it is at equal distance from previous prime (1220123232019) and next prime (1220123232043).

It is not a de Polignac number, because 1220123232031 - 2⁷ = 1220123231903 is a prime.

It is a super-2 number, since 2×1220123232031² (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 = 1220123231993 and 1220123232011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220123232001) 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, 37179076 + ... + 37211878.

It is an arithmetic number, because the mean of its divisors is an integer number (83297294568).

Almost surely, 2^{1220123232031} is an apocalyptic number.

1220123232031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220123232031 is a deficient number, since it is larger than the sum of its proper divisors (112633481057).

1220123232031 is a wasteful number, since it uses less digits than its factorization.

1220123232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37062.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1220123232031 its reverse (1302323210221), we get a palindrome (2522446442252).

It can be divided in two parts, 12201 and 23232031, that added together give a palindrome (23244232).

The spelling of 1220123232031 in words is "one trillion, two hundred twenty billion, one hundred twenty-three million, two hundred thirty-two thousand, thirty-one".