100404111243 has 16 divisors (see below), whose sum is σ = 141460945920. Its totient is φ = 63215353344.

The previous prime is 100404111217. The next prime is 100404111253. The reversal of 100404111243 is 342111404001.

It is not a de Polignac number, because 100404111243 - 2²¹ = 100402014091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100404111253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9204246 + ... + 9215147.

It is an arithmetic number, because the mean of its divisors is an integer number (8841309120).

Almost surely, 2^100404111243 is an apocalyptic number.

100404111243 is a deficient number, since it is larger than the sum of its proper divisors (41056834677).

100404111243 is a wasteful number, since it uses less digits than its factorization.

100404111243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18419498.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 100404111243 its reverse (342111404001), we get a palindrome (442515515244).

The spelling of 100404111243 in words is "one hundred billion, four hundred four million, one hundred eleven thousand, two hundred forty-three".