221100101121008 has 40 divisors (see below), whose sum is σ = 430024650768000. Its totient is φ = 110126807743680.

The previous prime is 221100101121007. The next prime is 221100101121013. The reversal of 221100101121008 is 800121101001122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100101121007) 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, 20946188 + ... + 29680683.

It is an arithmetic number, because the mean of its divisors is an integer number (10750616269200).

Almost surely, 2^{221100101121008} is an apocalyptic number.

It is an amenable number.

221100101121008 is a deficient number, since it is larger than the sum of its proper divisors (208924549646992).

221100101121008 is a wasteful number, since it uses less digits than its factorization.

221100101121008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50627925 (or 50627919 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

The spelling of 221100101121008 in words is "two hundred twenty-one trillion, one hundred billion, one hundred one million, one hundred twenty-one thousand, eight".