124410220021 has 4 divisors (see below), whose sum is σ = 124414407072. Its totient is φ = 124406032972.

The previous prime is 124410220001. The next prime is 124410220153. The reversal of 124410220021 is 120022014421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120022014421 = 499 ⋅240525079.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124410220021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124410220001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048635 + ... + 2108488.

It is an arithmetic number, because the mean of its divisors is an integer number (31103601768).

Almost surely, 2^124410220021 is an apocalyptic number.

It is an amenable number.

124410220021 is a deficient number, since it is larger than the sum of its proper divisors (4187051).

124410220021 is an equidigital number, since it uses as much as digits as its factorization.

124410220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187050.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 124410220021 its reverse (120022014421), we get a palindrome (244432234442).

The spelling of 124410220021 in words is "one hundred twenty-four billion, four hundred ten million, two hundred twenty thousand, twenty-one".