221001110212012 has 72 divisors (see below), whose sum is σ = 423917619285776. Its totient is φ = 100212024946176.

The previous prime is 221001110212007. The next prime is 221001110212019. The reversal of 221001110212012 is 210212011100122.

It is not an unprimeable number, because it can be changed into a prime (221001110212019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62958283 + ... + 66375805.

Almost surely, 2^{221001110212012} is an apocalyptic number.

It is an amenable number.

221001110212012 is a deficient number, since it is larger than the sum of its proper divisors (202916509073764).

221001110212012 is a wasteful number, since it uses less digits than its factorization.

221001110212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417875 (or 3417784 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221001110212012 its reverse (210212011100122), we get a palindrome (431213121312134).

The spelling of 221001110212012 in words is "two hundred twenty-one trillion, one billion, one hundred ten million, two hundred twelve thousand, twelve".