20124203343321 has 64 divisors (see below), whose sum is σ = 33502740480000. Its totient is φ = 10438667284800.

The previous prime is 20124203343311. The next prime is 20124203343371. The reversal of 20124203343321 is 12334330242102.

It is a happy number.

It is not a de Polignac number, because 20124203343321 - 2¹³ = 20124203335129 is a prime.

It is a super-2 number, since 2×20124203343321² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20124203343311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 496885930 + ... + 496926428.

It is an arithmetic number, because the mean of its divisors is an integer number (523480320000).

Almost surely, 2^{20124203343321} is an apocalyptic number.

20124203343321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20124203343321 is a deficient number, since it is larger than the sum of its proper divisors (13378537136679).

20124203343321 is a wasteful number, since it uses less digits than its factorization.

20124203343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43650.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 20124203343321 its reverse (12334330242102), we get a palindrome (32458533585423).

The spelling of 20124203343321 in words is "twenty trillion, one hundred twenty-four billion, two hundred three million, three hundred forty-three thousand, three hundred twenty-one".