21112222312033 has 8 divisors (see below), whose sum is σ = 21656659580136. Its totient is φ = 20569190044800.

The previous prime is 21112222311997. The next prime is 21112222312039. The reversal of 21112222312033 is 33021322221112.

It can be written as a sum of positive squares in 4 ways, for example, as 492113474064 + 20620108837969 = 701508^2 + 4540937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21112222312033 - 2¹⁷ = 21112222180961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21112222311989 and 21112222312007.

It is not an unprimeable number, because it can be changed into a prime (21112222312039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351219778 + ... + 351279883.

It is an arithmetic number, because the mean of its divisors is an integer number (2707082447517).

Almost surely, 2^{21112222312033} is an apocalyptic number.

It is an amenable number.

21112222312033 is a deficient number, since it is larger than the sum of its proper divisors (544437268103).

21112222312033 is an equidigital number, since it uses as much as digits as its factorization.

21112222312033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702500435.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21112222312033 its reverse (33021322221112), we get a palindrome (54133544533145).

The spelling of 21112222312033 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty-two million, three hundred twelve thousand, thirty-three".