20213124532 has 12 divisors (see below), whose sum is σ = 35379278116. Its totient is φ = 10104759360.

The previous prime is 20213124511. The next prime is 20213124557. The reversal of 20213124532 is 23542131202.

It can be written as a sum of positive squares in 2 ways, for example, as 17459393956 + 2753730576 = 132134^2 + 52476^2 .

It is a super-2 number, since 2×20213124532² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20213124497 and 20213124506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425343 + ... + 470470.

Almost surely, 2^20213124532 is an apocalyptic number.

It is an amenable number.

20213124532 is a deficient number, since it is larger than the sum of its proper divisors (15166153584).

20213124532 is a wasteful number, since it uses less digits than its factorization.

20213124532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901458 (or 901456 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20213124532 its reverse (23542131202), we get a palindrome (43755255734).

The spelling of 20213124532 in words is "twenty billion, two hundred thirteen million, one hundred twenty-four thousand, five hundred thirty-two".