100400402024401 has 4 divisors (see below), whose sum is σ = 101775749997412. Its totient is φ = 99025054051392.

The previous prime is 100400402024353. The next prime is 100400402024413. The reversal of 100400402024401 is 104420204004001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79165595225025 + 21234806799376 = 8897505^2 + 4608124^2 .

It is a cyclic number.

It is not a de Polignac number, because 100400402024401 - 2¹⁷ = 100400401893329 is a prime.

It is a super-2 number, since 2×100400402024401² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100400402021401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687673986396 + ... + 687673986541.

It is an arithmetic number, because the mean of its divisors is an integer number (25443937499353).

Almost surely, 2^{100400402024401} is an apocalyptic number.

It is an amenable number.

100400402024401 is a deficient number, since it is larger than the sum of its proper divisors (1375347973011).

100400402024401 is an equidigital number, since it uses as much as digits as its factorization.

100400402024401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375347973010.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 100400402024401 its reverse (104420204004001), we get a palindrome (204820606028402).

The spelling of 100400402024401 in words is "one hundred trillion, four hundred billion, four hundred two million, twenty-four thousand, four hundred one".