2221100121112 has 8 divisors (see below), whose sum is σ = 4164562727100. Its totient is φ = 1110550060552.

The previous prime is 2221100121103. The next prime is 2221100121113. The reversal of 2221100121112 is 2111210011222.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221100121113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138818757562 + ... + 138818757577.

Almost surely, 2^{2221100121112} is an apocalyptic number.

It is an amenable number.

2221100121112 is a deficient number, since it is larger than the sum of its proper divisors (1943462605988).

2221100121112 is a wasteful number, since it uses less digits than its factorization.

2221100121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277637515145 (or 277637515141 counting only the distinct ones).

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

Adding to 2221100121112 its reverse (2111210011222), we get a palindrome (4332310132334).

The spelling of 2221100121112 in words is "two trillion, two hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, one hundred twelve".