1220123132031 has 48 divisors (see below), whose sum is σ = 1831231170144. Its totient is φ = 719978969088.

The previous prime is 1220123132023. The next prime is 1220123132057. The reversal of 1220123132031 is 1302313210221.

It is not a de Polignac number, because 1220123132031 - 2³ = 1220123132023 is a prime.

It is a super-2 number, since 2×1220123132031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220123131989 and 1220123132007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220123132071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2280441 + ... + 2764173.

It is an arithmetic number, because the mean of its divisors is an integer number (38150649378).

Almost surely, 2^{1220123132031} is an apocalyptic number.

1220123132031 is a deficient number, since it is larger than the sum of its proper divisors (611108038113).

1220123132031 is a wasteful number, since it uses less digits than its factorization.

1220123132031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483928 (or 483909 counting only the distinct ones).

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

Adding to 1220123132031 its reverse (1302313210221), we get a palindrome (2522436342252).

The spelling of 1220123132031 in words is "one trillion, two hundred twenty billion, one hundred twenty-three million, one hundred thirty-two thousand, thirty-one".