21020303123332 has 6 divisors (see below), whose sum is σ = 36785530465838. Its totient is φ = 10510151561664.

The previous prime is 21020303123299. The next prime is 21020303123363. The reversal of 21020303123332 is 23332130302012.

It can be written as a sum of positive squares in only one way, i.e., 13008097342276 + 8012205781056 = 3606674^2 + 2830584^2 .

It is a super-2 number, since 2×21020303123332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21020303123297 and 21020303123306.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627537890413 + ... + 2627537890420.

Almost surely, 2^{21020303123332} is an apocalyptic number.

It is an amenable number.

21020303123332 is a deficient number, since it is larger than the sum of its proper divisors (15765227342506).

21020303123332 is a wasteful number, since it uses less digits than its factorization.

21020303123332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255075780837 (or 5255075780835 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21020303123332 its reverse (23332130302012), we get a palindrome (44352433425344).

The spelling of 21020303123332 in words is "twenty-one trillion, twenty billion, three hundred three million, one hundred twenty-three thousand, three hundred thirty-two".