221102121201210 has 48 divisors (see below), whose sum is σ = 574867239804000. Its totient is φ = 58960388763360.

The previous prime is 221102121201209. The next prime is 221102121201229. The reversal of 221102121201210 is 12102121201122.

221102121201210 is a `hidden beast` number, since 2 + 211 + 0 + 21 + 21 + 201 + 210 = 666.

221102121201210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221102121201210² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27983541 + ... + 35004039.

It is an arithmetic number, because the mean of its divisors is an integer number (11976400829250).

Almost surely, 2^{221102121201210} is an apocalyptic number.

221102121201210 is an abundant number, since it is smaller than the sum of its proper divisors (353765118602790).

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

221102121201210 is a wasteful number, since it uses less digits than its factorization.

221102121201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370443 (or 7370440 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221102121201210 its reverse (12102121201122), we get a palindrome (233204242402332).

The spelling of 221102121201210 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twenty-one million, two hundred one thousand, two hundred ten".