22002220200221 has 4 divisors (see below), whose sum is σ = 22170176079744. Its totient is φ = 21834264320700.

The previous prime is 22002220200203. The next prime is 22002220200251. The reversal of 22002220200221 is 12200202220022.

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 22002220200221 - 2³⁰ = 22001146458397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22002220200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002220200251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83977939565 + ... + 83977939826.

It is an arithmetic number, because the mean of its divisors is an integer number (5542544019936).

Almost surely, 2^{22002220200221} is an apocalyptic number.

It is an amenable number.

22002220200221 is a deficient number, since it is larger than the sum of its proper divisors (167955879523).

22002220200221 is a wasteful number, since it uses less digits than its factorization.

22002220200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167955879522.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22002220200221 its reverse (12200202220022), we get a palindrome (34202422420243).

The spelling of 22002220200221 in words is "twenty-two trillion, two billion, two hundred twenty million, two hundred thousand, two hundred twenty-one".