20124300021 has 8 divisors (see below), whose sum is σ = 30665600064. Its totient is φ = 11499600000.

The previous prime is 20124300019. The next prime is 20124300023. The reversal of 20124300021 is 12000342102.

It is an interprime number because it is at equal distance from previous prime (20124300019) and next prime (20124300023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20124300021 - 2¹ = 20124300019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124300023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479149980 + ... + 479150021.

It is an arithmetic number, because the mean of its divisors is an integer number (3833200008).

Almost surely, 2^20124300021 is an apocalyptic number.

20124300021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20124300021 is a deficient number, since it is larger than the sum of its proper divisors (10541300043).

20124300021 is an equidigital number, since it uses as much as digits as its factorization.

20124300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958300011.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20124300021 its reverse (12000342102), we get a palindrome (32124642123).

The spelling of 20124300021 in words is "twenty billion, one hundred twenty-four million, three hundred thousand, twenty-one".