221111102002012 has 12 divisors (see below), whose sum is σ = 386955152488296. Its totient is φ = 110552487005360.

The previous prime is 221111102002009. The next prime is 221111102002169. The reversal of 221111102002012 is 210200201111122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765836539 + ... + 766125202.

It is an arithmetic number, because the mean of its divisors is an integer number (32246262707358).

Almost surely, 2^{221111102002012} is an apocalyptic number.

It is an amenable number.

221111102002012 is a deficient number, since it is larger than the sum of its proper divisors (165844050486284).

221111102002012 is a wasteful number, since it uses less digits than its factorization.

221111102002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531997828 (or 1531997826 counting only the distinct ones).

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

Adding to 221111102002012 its reverse (210200201111122), we get a palindrome (431311303113134).

The spelling of 221111102002012 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred two million, two thousand, twelve".