21210031330112 has 14 divisors (see below), whose sum is σ = 42088655920818. Its totient is φ = 10605015665024.

The previous prime is 21210031330069. The next prime is 21210031330133. The reversal of 21210031330112 is 21103313001212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20496046889536 + 713984440576 = 4527256^2 + 844976^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165703369703 + ... + 165703369830.

Almost surely, 2^{21210031330112} is an apocalyptic number.

It is an amenable number.

21210031330112 is a deficient number, since it is larger than the sum of its proper divisors (20878624590706).

21210031330112 is an equidigital number, since it uses as much as digits as its factorization.

21210031330112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331406739545 (or 331406739535 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21210031330112 its reverse (21103313001212), we get a palindrome (42313344331324).

The spelling of 21210031330112 in words is "twenty-one trillion, two hundred ten billion, thirty-one million, three hundred thirty thousand, one hundred twelve".