20123310200 has 144 divisors (see below), whose sum is σ = 54554287320. Its totient is φ = 6883080960.

The previous prime is 20123310197. The next prime is 20123310211. The reversal of 20123310200 is 201332102.

It is a happy number.

It is a super-2 number, since 2×20123310200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4574402 + ... + 4578798.

Almost surely, 2^20123310200 is an apocalyptic number.

20123310200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123310200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27277143660).

20123310200 is an abundant number, since it is smaller than the sum of its proper divisors (34430977120).

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

20123310200 is a wasteful number, since it uses less digits than its factorization.

20123310200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4894 (or 4878 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20123310200 its reverse (201332102), we get a palindrome (20324642302).

The spelling of 20123310200 in words is "twenty billion, one hundred twenty-three million, three hundred ten thousand, two hundred".