100401221403 has 24 divisors (see below), whose sum is σ = 168550886400. Its totient is φ = 56399715504.

The previous prime is 100401221377. The next prime is 100401221429. The reversal of 100401221403 is 304122104001.

100401221403 is a `hidden beast` number, since 1 + 0 + 0 + 40 + 1 + 221 + 403 = 666.

It is an interprime number because it is at equal distance from previous prime (100401221377) and next prime (100401221429).

It is not a de Polignac number, because 100401221403 - 2³² = 96106254107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100401221303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13501963 + ... + 13509396.

It is an arithmetic number, because the mean of its divisors is an integer number (7022953600).

Almost surely, 2^100401221403 is an apocalyptic number.

100401221403 is a deficient number, since it is larger than the sum of its proper divisors (68149664997).

100401221403 is a wasteful number, since it uses less digits than its factorization.

100401221403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27011431 (or 27011428 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 100401221403 its reverse (304122104001), we get a palindrome (404523325404).

The spelling of 100401221403 in words is "one hundred billion, four hundred one million, two hundred twenty-one thousand, four hundred three".