124020132021 has 10 divisors (see below), whose sum is σ = 185264641782. Its totient is φ = 82680087960.

The previous prime is 124020131969. The next prime is 124020132133. The reversal of 124020132021 is 120231020421.

It is a happy number.

124020132021 is a `hidden beast` number, since 124 + 0 + 201 + 320 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 99083300625 + 24936831396 = 314775^2 + 157914^2 .

It is not a de Polignac number, because 124020132021 - 2²⁶ = 123953023157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124020131985 and 124020132003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124020130021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 765556290 + ... + 765556451.

Almost surely, 2^124020132021 is an apocalyptic number.

It is an amenable number.

124020132021 is a deficient number, since it is larger than the sum of its proper divisors (61244509761).

124020132021 is an equidigital number, since it uses as much as digits as its factorization.

124020132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531112753 (or 1531112744 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 124020132021 its reverse (120231020421), we get a palindrome (244251152442).

The spelling of 124020132021 in words is "one hundred twenty-four billion, twenty million, one hundred thirty-two thousand, twenty-one".