21210203320112 has 10 divisors (see below), whose sum is σ = 41094768932748. Its totient is φ = 10605101660048.

The previous prime is 21210203320073. The next prime is 21210203320129. The reversal of 21210203320112 is 21102330201212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662818853738 + ... + 662818853769.

Almost surely, 2^{21210203320112} is an apocalyptic number.

It is an amenable number.

21210203320112 is a deficient number, since it is larger than the sum of its proper divisors (19884565612636).

21210203320112 is a wasteful number, since it uses less digits than its factorization.

21210203320112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325637707515 (or 1325637707509 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21210203320112 its reverse (21102330201212), we get a palindrome (42312533521324).

The spelling of 21210203320112 in words is "twenty-one trillion, two hundred ten billion, two hundred three million, three hundred twenty thousand, one hundred twelve".