21030210112 has 14 divisors (see below), whose sum is σ = 41731823318. Its totient is φ = 10515105024.

The previous prime is 21030210083. The next prime is 21030210133. The reversal of 21030210112 is 21101203012.

It can be written as a sum of positive squares in only one way, i.e., 19294321216 + 1735888896 = 138904^2 + 41664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21030210092 and 21030210101.

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, 164298453 + ... + 164298580.

Almost surely, 2^21030210112 is an apocalyptic number.

It is an amenable number.

21030210112 is a deficient number, since it is larger than the sum of its proper divisors (20701613206).

21030210112 is an equidigital number, since it uses as much as digits as its factorization.

21030210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328597045 (or 328597035 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21030210112 its reverse (21101203012), we get a palindrome (42131413124).

The spelling of 21030210112 in words is "twenty-one billion, thirty million, two hundred ten thousand, one hundred twelve".