221001002213 has 4 divisors (see below), whose sum is σ = 226140560448. Its totient is φ = 215861443980.

The previous prime is 221001002203. The next prime is 221001002231. The reversal of 221001002213 is 312200100122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221001002213 - 2²⁸ = 220732566757 is a prime.

It is a super-4 number, since 4×221001002213⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001002203) 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 3 ways as a sum of consecutive naturals, for example, 2569779053 + ... + 2569779138.

It is an arithmetic number, because the mean of its divisors is an integer number (56535140112).

Almost surely, 2^221001002213 is an apocalyptic number.

It is an amenable number.

221001002213 is a deficient number, since it is larger than the sum of its proper divisors (5139558235).

221001002213 is an equidigital number, since it uses as much as digits as its factorization.

221001002213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139558234.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221001002213 its reverse (312200100122), we get a palindrome (533201102335).

The spelling of 221001002213 in words is "two hundred twenty-one billion, one million, two thousand, two hundred thirteen".