21030132453321 has 32 divisors (see below), whose sum is σ = 30270454560000. Its totient is φ = 12947147313408.

The previous prime is 21030132453311. The next prime is 21030132453383. The reversal of 21030132453321 is 12335423103012.

It is not a de Polignac number, because 21030132453321 - 2¹⁹ = 21030131929033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21030132453311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27697455 + ... + 28446603.

It is an arithmetic number, because the mean of its divisors is an integer number (945951705000).

Almost surely, 2^{21030132453321} is an apocalyptic number.

It is an amenable number.

21030132453321 is a deficient number, since it is larger than the sum of its proper divisors (9240322106679).

21030132453321 is a wasteful number, since it uses less digits than its factorization.

21030132453321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763233.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 21030132453321 its reverse (12335423103012), we get a palindrome (33365555556333).

The spelling of 21030132453321 in words is "twenty-one trillion, thirty billion, one hundred thirty-two million, four hundred fifty-three thousand, three hundred twenty-one".