100101216556 has 24 divisors (see below), whose sum is σ = 191128193424. Its totient is φ = 45494393280.

The previous prime is 100101216521. The next prime is 100101216557. The reversal of 100101216556 is 655612101001.

It is a happy number.

It is a super-2 number, since 2×100101216556² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100101216557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183006 + ... + 483418.

It is an arithmetic number, because the mean of its divisors is an integer number (7963674726).

Almost surely, 2^100101216556 is an apocalyptic number.

It is an amenable number.

100101216556 is a deficient number, since it is larger than the sum of its proper divisors (91026976868).

100101216556 is a wasteful number, since it uses less digits than its factorization.

100101216556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308001 (or 307999 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 100101216556 its reverse (655612101001), we get a palindrome (755713317557).

The spelling of 100101216556 in words is "one hundred billion, one hundred one million, two hundred sixteen thousand, five hundred fifty-six".