2221001212113 has 6 divisors (see below), whose sum is σ = 3208112861954. Its totient is φ = 1480667474736.

The previous prime is 2221001212109. The next prime is 2221001212151. The reversal of 2221001212113 is 3112121001222.

It can be written as a sum of positive squares in only one way, i.e., 2187937972224 + 33063239889 = 1479168^2 + 181833^2 .

It is not a de Polignac number, because 2221001212113 - 2² = 2221001212109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2221001262113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123388956220 + ... + 123388956237.

Almost surely, 2^{2221001212113} is an apocalyptic number.

It is an amenable number.

2221001212113 is a deficient number, since it is larger than the sum of its proper divisors (987111649841).

2221001212113 is a wasteful number, since it uses less digits than its factorization.

2221001212113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246777912463 (or 246777912460 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2221001212113 its reverse (3112121001222), we get a palindrome (5333122213335).

The spelling of 2221001212113 in words is "two trillion, two hundred twenty-one billion, one million, two hundred twelve thousand, one hundred thirteen".