21255614122233 has 16 divisors (see below), whose sum is σ = 28876451970240. Its totient is φ = 13902609524544.

The previous prime is 21255614122207. The next prime is 21255614122271. The reversal of 21255614122233 is 33222141655212.

It is not a de Polignac number, because 21255614122233 - 2¹⁴ = 21255614105849 is a prime.

It is a super-2 number, since 2×21255614122233² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21255614122191 and 21255614122200.

It is not an unprimeable number, because it can be changed into a prime (21255614122333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3068310 + ... + 7205952.

It is an arithmetic number, because the mean of its divisors is an integer number (1804778248140).

Almost surely, 2^{21255614122233} is an apocalyptic number.

It is an amenable number.

21255614122233 is a deficient number, since it is larger than the sum of its proper divisors (7620837848007).

21255614122233 is a wasteful number, since it uses less digits than its factorization.

21255614122233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170008.

The product of its digits is 172800, while the sum is 39.

Adding to 21255614122233 its reverse (33222141655212), we get a palindrome (54477755777445).

The spelling of 21255614122233 in words is "twenty-one trillion, two hundred fifty-five billion, six hundred fourteen million, one hundred twenty-two thousand, two hundred thirty-three".