21532030043252 has 48 divisors (see below), whose sum is σ = 38174933139840. Its totient is φ = 10626033600000.

The previous prime is 21532030043243. The next prime is 21532030043257. The reversal of 21532030043252 is 25234003023512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21532030043257) 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, 61832408 + ... + 62179664.

It is an arithmetic number, because the mean of its divisors is an integer number (795311107080).

Almost surely, 2^{21532030043252} is an apocalyptic number.

It is an amenable number.

21532030043252 is a deficient number, since it is larger than the sum of its proper divisors (16642903096588).

21532030043252 is a wasteful number, since it uses less digits than its factorization.

21532030043252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348072 (or 348070 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 21532030043252 its reverse (25234003023512), we get a palindrome (46766033066764).

The spelling of 21532030043252 in words is "twenty-one trillion, five hundred thirty-two billion, thirty million, forty-three thousand, two hundred fifty-two".