221010122220012 has 18 divisors (see below), whose sum is σ = 558664475611788. Its totient is φ = 73670040739992.

The previous prime is 221010122220001. The next prime is 221010122220049. The reversal of 221010122220012 is 210022221010122.

It is a happy number.

221010122220012 is a `hidden beast` number, since 221 + 0 + 10 + 1 + 222 + 200 + 12 = 666.

221010122220012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3069585030798 + ... + 3069585030869.

It is an arithmetic number, because the mean of its divisors is an integer number (31036915311766).

Almost surely, 2^{221010122220012} is an apocalyptic number.

It is an amenable number.

221010122220012 is an abundant number, since it is smaller than the sum of its proper divisors (337654353391776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221010122220012 is a wasteful number, since it uses less digits than its factorization.

221010122220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139170061677 (or 6139170061672 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221010122220012 its reverse (210022221010122), we get a palindrome (431032343230134).

The spelling of 221010122220012 in words is "two hundred twenty-one trillion, ten billion, one hundred twenty-two million, two hundred twenty thousand, twelve".