20124400102 has 8 divisors (see below), whose sum is σ = 30283664112. Its totient is φ = 10029845400.

The previous prime is 20124400027. The next prime is 20124400117. The reversal of 20124400102 is 20100442102.

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

It is a super-2 number, since 2×20124400102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16176549 + ... + 16177792.

It is an arithmetic number, because the mean of its divisors is an integer number (3785458014).

Almost surely, 2^20124400102 is an apocalyptic number.

20124400102 is a deficient number, since it is larger than the sum of its proper divisors (10159264010).

20124400102 is a wasteful number, since it uses less digits than its factorization.

20124400102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32354654.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20124400102 its reverse (20100442102), we get a palindrome (40224842204).

The spelling of 20124400102 in words is "twenty billion, one hundred twenty-four million, four hundred thousand, one hundred two".