1231022120103 has 24 divisors (see below), whose sum is σ = 1780325908608. Its totient is φ = 819674327232.

The previous prime is 1231022120077. The next prime is 1231022120131. The reversal of 1231022120103 is 3010212201321.

1231022120103 is a `hidden beast` number, since 12 + 310 + 221 + 20 + 103 = 666.

It is not a de Polignac number, because 1231022120103 - 2²⁴ = 1231005342887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231022120173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48504325 + ... + 48529697.

It is an arithmetic number, because the mean of its divisors is an integer number (74180246192).

Almost surely, 2^{1231022120103} is an apocalyptic number.

1231022120103 is a deficient number, since it is larger than the sum of its proper divisors (549303788505).

1231022120103 is a wasteful number, since it uses less digits than its factorization.

1231022120103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31783 (or 31780 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1231022120103 its reverse (3010212201321), we get a palindrome (4241234321424).

The spelling of 1231022120103 in words is "one trillion, two hundred thirty-one billion, twenty-two million, one hundred twenty thousand, one hundred three".