21333222223231 has 8 divisors (see below), whose sum is σ = 21416598836064. Its totient is φ = 21249848463360.

The previous prime is 21333222223199. The next prime is 21333222223241. The reversal of 21333222223231 is 13232222233312.

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 21333222223231 - 2⁵ = 21333222223199 is a prime.

It is a super-2 number, since 2×21333222223231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21333222223193 and 21333222223202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333222223241) 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, 14941086 + ... + 16306516.

It is an arithmetic number, because the mean of its divisors is an integer number (2677074854508).

Almost surely, 2^{21333222223231} is an apocalyptic number.

21333222223231 is a deficient number, since it is larger than the sum of its proper divisors (83376612833).

21333222223231 is a wasteful number, since it uses less digits than its factorization.

21333222223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426481.

The product of its digits is 31104, while the sum is 31.

Adding to 21333222223231 its reverse (13232222233312), we get a palindrome (34565444456543).

The spelling of 21333222223231 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred twenty-two million, two hundred twenty-three thousand, two hundred thirty-one".