21010302112 has 12 divisors (see below), whose sum is σ = 41364032346. Its totient is φ = 10505151040.

The previous prime is 21010302097. The next prime is 21010302143. The reversal of 21010302112 is 21120301012.

It can be written as a sum of positive squares in only one way, i.e., 18562427536 + 2447874576 = 136244^2 + 49476^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21010302092 and 21010302101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328285939 + ... + 328286002.

Almost surely, 2^21010302112 is an apocalyptic number.

It is an amenable number.

21010302112 is a deficient number, since it is larger than the sum of its proper divisors (20353730234).

21010302112 is an equidigital number, since it uses as much as digits as its factorization.

21010302112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656571951 (or 656571943 counting only the distinct ones).

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

Adding to 21010302112 its reverse (21120301012), we get a palindrome (42130603124).

The spelling of 21010302112 in words is "twenty-one billion, ten million, three hundred two thousand, one hundred twelve".