2221100111212 has 12 divisors (see below), whose sum is σ = 3888154089736. Its totient is φ = 1110198942720.

The previous prime is 2221100111183. The next prime is 2221100111267. The reversal of 2221100111212 is 2121110011222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87763989 + ... + 87789292.

Almost surely, 2^{2221100111212} is an apocalyptic number.

It is an amenable number.

2221100111212 is a deficient number, since it is larger than the sum of its proper divisors (1667053978524).

2221100111212 is a wasteful number, since it uses less digits than its factorization.

2221100111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175556448 (or 175556446 counting only the distinct ones).

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

Adding to 2221100111212 its reverse (2121110011222), we get a palindrome (4342210122434).

The spelling of 2221100111212 in words is "two trillion, two hundred twenty-one billion, one hundred million, one hundred eleven thousand, two hundred twelve".