221001111211003 has 4 divisors (see below), whose sum is σ = 222408761601040. Its totient is φ = 219593460820968.

The previous prime is 221001111210911. The next prime is 221001111211033. The reversal of 221001111211003 is 300112111100122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221001111211003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221001111211033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703825194783 + ... + 703825195096.

It is an arithmetic number, because the mean of its divisors is an integer number (55602190400260).

Almost surely, 2^{221001111211003} is an apocalyptic number.

221001111211003 is a deficient number, since it is larger than the sum of its proper divisors (1407650390037).

221001111211003 is a wasteful number, since it uses less digits than its factorization.

221001111211003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407650390036.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 221001111211003 its reverse (300112111100122), we get a palindrome (521113222311125).

The spelling of 221001111211003 in words is "two hundred twenty-one trillion, one billion, one hundred eleven million, two hundred eleven thousand, three".