100401244400 has 30 divisors (see below), whose sum is σ = 241213990632. Its totient is φ = 40160497600.

The previous prime is 100401244387. The next prime is 100401244457. The reversal of 100401244400 is 4442104001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125501156 + ... + 125501955.

Almost surely, 2^100401244400 is an apocalyptic number.

100401244400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100401244400 is an abundant number, since it is smaller than the sum of its proper divisors (140812746232).

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

100401244400 is a wasteful number, since it uses less digits than its factorization.

100401244400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251003129 (or 251003118 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 100401244400 its reverse (4442104001), we get a palindrome (104843348401).

The spelling of 100401244400 in words is "one hundred billion, four hundred one million, two hundred forty-four thousand, four hundred".