20123110200 has 48 divisors (see below), whose sum is σ = 62381643480. Its totient is φ = 5366162560.

The previous prime is 20123110199. The next prime is 20123110283. The reversal of 20123110200 is 201132102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16768659 + ... + 16769858.

Almost surely, 2^20123110200 is an apocalyptic number.

20123110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123110200 is an abundant number, since it is smaller than the sum of its proper divisors (42258533280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123110200 is a wasteful number, since it uses less digits than its factorization.

20123110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33538536 (or 33538527 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20123110200 its reverse (201132102), we get a palindrome (20324242302).

The spelling of 20123110200 in words is "twenty billion, one hundred twenty-three million, one hundred ten thousand, two hundred".