21332022231 has 16 divisors (see below), whose sum is σ = 30644117504. Its totient is φ = 13121603424.

The previous prime is 21332022223. The next prime is 21332022253. The reversal of 21332022231 is 13222023312.

It is a happy number.

It is not a de Polignac number, because 21332022231 - 2³ = 21332022223 is a prime.

It is a super-2 number, since 2×21332022231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21332022198 and 21332022207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332022031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30391 + ... + 208776.

It is an arithmetic number, because the mean of its divisors is an integer number (1915257344).

Almost surely, 2^21332022231 is an apocalyptic number.

21332022231 is a deficient number, since it is larger than the sum of its proper divisors (9312095273).

21332022231 is a wasteful number, since it uses less digits than its factorization.

21332022231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241470.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21332022231 its reverse (13222023312), we get a palindrome (34554045543).

The spelling of 21332022231 in words is "twenty-one billion, three hundred thirty-two million, twenty-two thousand, two hundred thirty-one".