23212021332 has 12 divisors (see below), whose sum is σ = 54161383136. Its totient is φ = 7737340440.

The previous prime is 23212021331. The next prime is 23212021387. The reversal of 23212021332 is 23312021232.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 23212021299 and 23212021308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212021331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967167544 + ... + 967167567.

Almost surely, 2^23212021332 is an apocalyptic number.

It is an amenable number.

23212021332 is an abundant number, since it is smaller than the sum of its proper divisors (30949361804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23212021332 is a wasteful number, since it uses less digits than its factorization.

23212021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934335118 (or 1934335116 counting only the distinct ones).

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

Adding to 23212021332 its reverse (23312021232), we get a palindrome (46524042564).

The spelling of 23212021332 in words is "twenty-three billion, two hundred twelve million, twenty-one thousand, three hundred thirty-two".