10001312400 has 120 divisors (see below), whose sum is σ = 32157673920. Its totient is φ = 2657016320.

The previous prime is 10001312353. The next prime is 10001312437. The reversal of 10001312400 is 421310001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307309 + ... + 338291.

It is an arithmetic number, because the mean of its divisors is an integer number (267980616).

Almost surely, 2^10001312400 is an apocalyptic number.

10001312400 is a gapful number since it is divisible by the number (10) 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 10001312400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16078836960).

10001312400 is an abundant number, since it is smaller than the sum of its proper divisors (22156361520).

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

10001312400 is a wasteful number, since it uses less digits than its factorization.

10001312400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31273 (or 31262 counting only the distinct ones).

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

Adding to 10001312400 its reverse (421310001), we get a palindrome (10422622401).

The spelling of 10001312400 in words is "ten billion, one million, three hundred twelve thousand, four hundred".