221012211210013 has 4 divisors (see below), whose sum is σ = 221118110690400. Its totient is φ = 220906311729628.

The previous prime is 221012211210001. The next prime is 221012211210029. The reversal of 221012211210013 is 310012112210122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221012211210013 - 2⁴⁵ = 185827839121181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012211210053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52949737063 + ... + 52949741236.

It is an arithmetic number, because the mean of its divisors is an integer number (55279527672600).

Almost surely, 2^{221012211210013} is an apocalyptic number.

It is an amenable number.

221012211210013 is a deficient number, since it is larger than the sum of its proper divisors (105899480387).

221012211210013 is a wasteful number, since it uses less digits than its factorization.

221012211210013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105899480386.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 221012211210013 its reverse (310012112210122), we get a palindrome (531024323420135).

The spelling of 221012211210013 in words is "two hundred twenty-one trillion, twelve billion, two hundred eleven million, two hundred ten thousand, thirteen".