100401223522 has 4 divisors (see below), whose sum is σ = 150601835286. Its totient is φ = 50200611760.

The previous prime is 100401223519. The next prime is 100401223541. The reversal of 100401223522 is 225322104001.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 61379567001 + 39021656521 = 247749^2 + 197539^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100401223493 and 100401223502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25100305879 + ... + 25100305882.

Almost surely, 2^100401223522 is an apocalyptic number.

100401223522 is a deficient number, since it is larger than the sum of its proper divisors (50200611764).

100401223522 is an equidigital number, since it uses as much as digits as its factorization.

100401223522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50200611763.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 100401223522 its reverse (225322104001), we get a palindrome (325723327523).

The spelling of 100401223522 in words is "one hundred billion, four hundred one million, two hundred twenty-three thousand, five hundred twenty-two".