221001100012002 has 16 divisors (see below), whose sum is σ = 442039974901632. Its totient is φ = 73660737524400.

The previous prime is 221001100012001. The next prime is 221001100012027. The reversal of 221001100012002 is 200210001100122.

It is not an unprimeable number, because it can be changed into a prime (221001100012001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573877178 + ... + 1574017589.

It is an arithmetic number, because the mean of its divisors is an integer number (27627498431352).

Almost surely, 2^{221001100012002} is an apocalyptic number.

221001100012002 is an abundant number, since it is smaller than the sum of its proper divisors (221038874889630).

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

221001100012002 is a wasteful number, since it uses less digits than its factorization.

221001100012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3147906473.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221001100012002 its reverse (200210001100122), we get a palindrome (421211101112124).

The spelling of 221001100012002 in words is "two hundred twenty-one trillion, one billion, one hundred million, twelve thousand, two".