21030123101332 has 6 divisors (see below), whose sum is σ = 36802715427338. Its totient is φ = 10515061550664.

The previous prime is 21030123101303. The next prime is 21030123101359. The reversal of 21030123101332 is 23310132103012.

It can be written as a sum of positive squares in only one way, i.e., 11428280569476 + 9601842531856 = 3380574^2 + 3098684^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628765387663 + ... + 2628765387670.

Almost surely, 2^{21030123101332} is an apocalyptic number.

It is an amenable number.

21030123101332 is a deficient number, since it is larger than the sum of its proper divisors (15772592326006).

21030123101332 is a wasteful number, since it uses less digits than its factorization.

21030123101332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5257530775337 (or 5257530775335 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21030123101332 its reverse (23310132103012), we get a palindrome (44340255204344).

The spelling of 21030123101332 in words is "twenty-one trillion, thirty billion, one hundred twenty-three million, one hundred one thousand, three hundred thirty-two".