20532121343 has 4 divisors (see below), whose sum is σ = 20560678560. Its totient is φ = 20503564128.

The previous prime is 20532121319. The next prime is 20532121397. The reversal of 20532121343 is 34312123502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20532121343 - 2⁶ = 20532121279 is a prime.

It is a super-2 number, since 2×20532121343² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532121303) 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, 14277530 + ... + 14278967.

It is an arithmetic number, because the mean of its divisors is an integer number (5140169640).

Almost surely, 2^20532121343 is an apocalyptic number.

20532121343 is a deficient number, since it is larger than the sum of its proper divisors (28557217).

20532121343 is an equidigital number, since it uses as much as digits as its factorization.

20532121343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28557216.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 20532121343 its reverse (34312123502), we get a palindrome (54844244845).

The spelling of 20532121343 in words is "twenty billion, five hundred thirty-two million, one hundred twenty-one thousand, three hundred forty-three".