221001100011010 has 128 divisors (see below), whose sum is σ = 464913249419520. Its totient is φ = 74745491251200.

The previous prime is 221001100010989. The next prime is 221001100011031. The reversal of 221001100011010 is 10110001100122.

221001100011010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221001100010989) and next prime (221001100011031).

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 301038112 + ... + 301771348.

It is an arithmetic number, because the mean of its divisors is an integer number (3632134761090).

Almost surely, 2^{221001100011010} is an apocalyptic number.

221001100011010 is an abundant number, since it is smaller than the sum of its proper divisors (243912149408510).

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

221001100011010 is a wasteful number, since it uses less digits than its factorization.

221001100011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735172.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 221001100011010 its reverse (10110001100122), we get a palindrome (231111101111132).

The spelling of 221001100011010 in words is "two hundred twenty-one trillion, one billion, one hundred million, eleven thousand, ten".