21322101432 has 64 divisors (see below), whose sum is σ = 55054961280. Its totient is φ = 6877164672.

The previous prime is 21322101431. The next prime is 21322101457. The reversal of 21322101432 is 23410122312.

It is a junction number, because it is equal to n+sod(n) for n = 21322101399 and 21322101408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322101431) 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, 13878 + ... + 206970.

It is an arithmetic number, because the mean of its divisors is an integer number (860233770).

Almost surely, 2^21322101432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21322101432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27527480640).

21322101432 is an abundant number, since it is smaller than the sum of its proper divisors (33732859848).

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

21322101432 is a wasteful number, since it uses less digits than its factorization.

21322101432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193252 (or 193248 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21322101432 its reverse (23410122312), we get a palindrome (44732223744).

The spelling of 21322101432 in words is "twenty-one billion, three hundred twenty-two million, one hundred one thousand, four hundred thirty-two".