210221110121112 has 48 divisors (see below), whose sum is σ = 574985957158080. Its totient is φ = 69379904328000.

The previous prime is 210221110121081. The next prime is 210221110121317. The reversal of 210221110121112 is 211121011122012.

It is a happy number.

210221110121112 is a `hidden beast` number, since 210 + 2 + 211 + 10 + 121 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14454139464 + ... + 14454154007.

It is an arithmetic number, because the mean of its divisors is an integer number (11978874107460).

Almost surely, 2^{210221110121112} is an apocalyptic number.

It is an amenable number.

210221110121112 is an abundant number, since it is smaller than the sum of its proper divisors (364764847036968).

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

210221110121112 is a wasteful number, since it uses less digits than its factorization.

210221110121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28908293584 (or 28908293577 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 210221110121112 its reverse (211121011122012), we get a palindrome (421342121243124).

The spelling of 210221110121112 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred ten million, one hundred twenty-one thousand, one hundred twelve".