120021031130123 has 2 divisors, whose sum is σ = 120021031130124. Its totient is φ = 120021031130122.

The previous prime is 120021031130101. The next prime is 120021031130131. The reversal of 120021031130123 is 321031130120021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120021031130123 - 2³⁰ = 120019957388299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120021031130095 and 120021031130104.

It is not a weakly prime, because it can be changed into another prime (120021039130123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010515565061 + 60010515565062.

It is an arithmetic number, because the mean of its divisors is an integer number (60010515565062).

Almost surely, 2^{120021031130123} is an apocalyptic number.

120021031130123 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021031130123 is an equidigital number, since it uses as much as digits as its factorization.

120021031130123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 120021031130123 its reverse (321031130120021), we get a palindrome (441052161250144).

The spelling of 120021031130123 in words is "one hundred twenty trillion, twenty-one billion, thirty-one million, one hundred thirty thousand, one hundred twenty-three".