221120021100210 has 64 divisors (see below), whose sum is σ = 531767808000000. Its totient is φ = 58845373152192.

The previous prime is 221120021100193. The next prime is 221120021100247. The reversal of 221120021100210 is 12001120021122.

221120021100210 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 221120021100210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 531331791 + ... + 531747789.

It is an arithmetic number, because the mean of its divisors is an integer number (8308872000000).

Almost surely, 2^{221120021100210} is an apocalyptic number.

221120021100210 is an abundant number, since it is smaller than the sum of its proper divisors (310647786899790).

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

221120021100210 is a wasteful number, since it uses less digits than its factorization.

221120021100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452015.

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

Adding to 221120021100210 its reverse (12001120021122), we get a palindrome (233121141121332).

The spelling of 221120021100210 in words is "two hundred twenty-one trillion, one hundred twenty billion, twenty-one million, one hundred thousand, two hundred ten".