21110201210120 has 64 divisors (see below), whose sum is σ = 51827094267840. Its totient is φ = 7674785568000.

The previous prime is 21110201210093. The next prime is 21110201210257. The reversal of 21110201210120 is 2101210201112.

It is a junction number, because it is equal to n+sod(n) for n = 21110201210095 and 21110201210104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3111347 + ... + 7204226.

It is an arithmetic number, because the mean of its divisors is an integer number (809798347935).

Almost surely, 2^{21110201210120} is an apocalyptic number.

21110201210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110201210120 is an abundant number, since it is smaller than the sum of its proper divisors (30716893057720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110201210120 is a wasteful number, since it uses less digits than its factorization.

21110201210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10320246 (or 10320242 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110201210120 its reverse (2101210201112), we get a palindrome (23211411411232).

The spelling of 21110201210120 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, two hundred ten thousand, one hundred twenty".