221111002234013 has 4 divisors (see below), whose sum is σ = 221191670241948. Its totient is φ = 221030334226080.

The previous prime is 221111002233997. The next prime is 221111002234019. The reversal of 221111002234013 is 310432200111122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56660591546329 + 164450410687684 = 7527323^2 + 12823822^2 .

It is a cyclic number.

It is not a de Polignac number, because 221111002234013 - 2⁴ = 221111002233997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221111002234013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111002234019) 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, 40333999856 + ... + 40334005337.

It is an arithmetic number, because the mean of its divisors is an integer number (55297917560487).

Almost surely, 2^{221111002234013} is an apocalyptic number.

It is an amenable number.

221111002234013 is a deficient number, since it is larger than the sum of its proper divisors (80668007935).

221111002234013 is an equidigital number, since it uses as much as digits as its factorization.

221111002234013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80668007934.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 221111002234013 its reverse (310432200111122), we get a palindrome (531543202345135).

The spelling of 221111002234013 in words is "two hundred twenty-one trillion, one hundred eleven billion, two million, two hundred thirty-four thousand, thirteen".