221101220010210 has 16 divisors (see below), whose sum is σ = 530642928024576. Its totient is φ = 58960325336048.

The previous prime is 221101220010193. The next prime is 221101220010217. The reversal of 221101220010210 is 12010022101122.

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 221101220010210.

It is not an unprimeable number, because it can be changed into a prime (221101220010217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3685020333474 + ... + 3685020333533.

It is an arithmetic number, because the mean of its divisors is an integer number (33165183001536).

Almost surely, 2^{221101220010210} is an apocalyptic number.

221101220010210 is an abundant number, since it is smaller than the sum of its proper divisors (309541708014366).

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

221101220010210 is a wasteful number, since it uses less digits than its factorization.

221101220010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7370040667017.

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

Adding to 221101220010210 its reverse (12010022101122), we get a palindrome (233111242111332).

The spelling of 221101220010210 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twenty million, ten thousand, two hundred ten".