100405212226 has 32 divisors (see below), whose sum is σ = 172972008000. Its totient is φ = 43230386880.

The previous prime is 100405212223. The next prime is 100405212227. The reversal of 100405212226 is 622212504001.

It is a self number, because there is not a number n which added to its sum of digits gives 100405212226.

It is not an unprimeable number, because it can be changed into a prime (100405212221) 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, 3895036 + ... + 3920728.

It is an arithmetic number, because the mean of its divisors is an integer number (5405375250).

Almost surely, 2^100405212226 is an apocalyptic number.

100405212226 is a deficient number, since it is larger than the sum of its proper divisors (72566795774).

100405212226 is a wasteful number, since it uses less digits than its factorization.

100405212226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35074.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 100405212226 its reverse (622212504001), we get a palindrome (722617716227).

The spelling of 100405212226 in words is "one hundred billion, four hundred five million, two hundred twelve thousand, two hundred twenty-six".