201210021220110 has 128 divisors (see below), whose sum is σ = 570382140801024. Its totient is φ = 44453466852480.

The previous prime is 201210021219983. The next prime is 201210021220121. The reversal of 201210021220110 is 11022120012102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201210021220110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13302952 + ... + 24070491.

It is an arithmetic number, because the mean of its divisors is an integer number (4456110475008).

Almost surely, 2^{201210021220110} is an apocalyptic number.

201210021220110 is an abundant number, since it is smaller than the sum of its proper divisors (369172119580914).

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

201210021220110 is a wasteful number, since it uses less digits than its factorization.

201210021220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37374318.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201210021220110 its reverse (11022120012102), we get a palindrome (212232141232212).

The spelling of 201210021220110 in words is "two hundred one trillion, two hundred ten billion, twenty-one million, two hundred twenty thousand, one hundred ten".