21202120120112 has 10 divisors (see below), whose sum is σ = 41079107732748. Its totient is φ = 10601060060048.

The previous prime is 21202120120081. The next prime is 21202120120141. The reversal of 21202120120112 is 21102102120212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662566253738 + ... + 662566253769.

Almost surely, 2^{21202120120112} is an apocalyptic number.

It is an amenable number.

21202120120112 is a deficient number, since it is larger than the sum of its proper divisors (19876987612636).

21202120120112 is a wasteful number, since it uses less digits than its factorization.

21202120120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325132507515 (or 1325132507509 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21202120120112 its reverse (21102102120212), we get a palindrome (42304222240324).

The spelling of 21202120120112 in words is "twenty-one trillion, two hundred two billion, one hundred twenty million, one hundred twenty thousand, one hundred twelve".