21352202532 has 48 divisors (see below), whose sum is σ = 55979582400. Its totient is φ = 7037426880.

The previous prime is 21352202497. The next prime is 21352202539. The reversal of 21352202532 is 23520225312.

It is a super-3 number, since 3×21352202532³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a junction number, because it is equal to n+sod(n) for n = 21352202496 and 21352202505.

It is not an unprimeable number, because it can be changed into a prime (21352202539) 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, 1101094 + ... + 1120317.

It is an arithmetic number, because the mean of its divisors is an integer number (1166241300).

Almost surely, 2^21352202532 is an apocalyptic number.

It is an amenable number.

21352202532 is an abundant number, since it is smaller than the sum of its proper divisors (34627379868).

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

21352202532 is a wasteful number, since it uses less digits than its factorization.

21352202532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221513 (or 2221505 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 21352202532 its reverse (23520225312), we get a palindrome (44872427844).

The spelling of 21352202532 in words is "twenty-one billion, three hundred fifty-two million, two hundred two thousand, five hundred thirty-two".