221100001222010 has 32 divisors (see below), whose sum is σ = 398857392706320. Its totient is φ = 88245108052992.

The previous prime is 221100001222007. The next prime is 221100001222027. The reversal of 221100001222010 is 10222100001122.

221100001222010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 180845557181689 + 40254444040321 = 13447883^2 + 6344639^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16061252 + ... + 26460608.

Almost surely, 2^{221100001222010} is an apocalyptic number.

221100001222010 is a deficient number, since it is larger than the sum of its proper divisors (177757391484310).

221100001222010 is a wasteful number, since it uses less digits than its factorization.

221100001222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10404050.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221100001222010 its reverse (10222100001122), we get a palindrome (231322101223132).

The spelling of 221100001222010 in words is "two hundred twenty-one trillion, one hundred billion, one million, two hundred twenty-two thousand, ten".