221012221100012 has 24 divisors (see below), whose sum is σ = 409543188327504. Its totient is φ = 104000533747712.

The previous prime is 221012221100003. The next prime is 221012221100039. The reversal of 221012221100012 is 210001122210122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80155538 + ... + 82866969.

It is an arithmetic number, because the mean of its divisors is an integer number (17064299513646).

Almost surely, 2^{221012221100012} is an apocalyptic number.

It is an amenable number.

221012221100012 is a deficient number, since it is larger than the sum of its proper divisors (188530967227492).

221012221100012 is a wasteful number, since it uses less digits than its factorization.

221012221100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163042465 (or 163042463 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221012221100012 its reverse (210001122210122), we get a palindrome (431013343310134).

The spelling of 221012221100012 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-one million, one hundred thousand, twelve".