21231022122333 has 32 divisors (see below), whose sum is σ = 31971115867520. Its totient is φ = 13921666577280.

The previous prime is 21231022122251. The next prime is 21231022122337. The reversal of 21231022122333 is 33322122013212.

21231022122333 is a `hidden beast` number, since 2 + 1 + 2 + 310 + 2 + 2 + 12 + 2 + 333 = 666.

It is not a de Polignac number, because 21231022122333 - 2¹⁷ = 21231021991261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21231022122297 and 21231022122306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231022122337) 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 31 ways as a sum of consecutive naturals, for example, 7681960 + ... + 10073457.

It is an arithmetic number, because the mean of its divisors is an integer number (999097370860).

Almost surely, 2^{21231022122333} is an apocalyptic number.

It is an amenable number.

21231022122333 is a deficient number, since it is larger than the sum of its proper divisors (10740093745187).

21231022122333 is a wasteful number, since it uses less digits than its factorization.

21231022122333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17756154 (or 17756148 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21231022122333 its reverse (33322122013212), we get a palindrome (54553144135545).

The spelling of 21231022122333 in words is "twenty-one trillion, two hundred thirty-one billion, twenty-two million, one hundred twenty-two thousand, three hundred thirty-three".