221112100000013 has 4 divisors (see below), whose sum is σ = 221952830418528. Its totient is φ = 220271369581500.

The previous prime is 221112100000009. The next prime is 221112100000019. The reversal of 221112100000013 is 310000001211122.

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 221112100000013 - 2² = 221112100000009 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 (221112100000019) 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, 420365208863 + ... + 420365209388.

It is an arithmetic number, because the mean of its divisors is an integer number (55488207604632).

Almost surely, 2^{221112100000013} is an apocalyptic number.

It is an amenable number.

221112100000013 is a deficient number, since it is larger than the sum of its proper divisors (840730418515).

221112100000013 is an equidigital number, since it uses as much as digits as its factorization.

221112100000013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840730418514.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 221112100000013 its reverse (310000001211122), we get a palindrome (531112101211135).

The spelling of 221112100000013 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred million, thirteen", and thus it is an aban number.