22233332220221 has 4 divisors (see below), whose sum is σ = 22369733031552. Its totient is φ = 22096931408892.

The previous prime is 22233332220199. The next prime is 22233332220223. The reversal of 22233332220221 is 12202223333222.

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 22233332220221 - 2²⁶ = 22233265111357 is a prime.

It is a super-2 number, since 2×22233332220221² (a number of 27 digits) contains 22 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 (22233332220223) 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, 68200405421 + ... + 68200405746.

It is an arithmetic number, because the mean of its divisors is an integer number (5592433257888).

Almost surely, 2^{22233332220221} is an apocalyptic number.

It is an amenable number.

22233332220221 is a deficient number, since it is larger than the sum of its proper divisors (136400811331).

22233332220221 is a wasteful number, since it uses less digits than its factorization.

22233332220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136400811330.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 22233332220221 its reverse (12202223333222), we get a palindrome (34435555553443).

The spelling of 22233332220221 in words is "twenty-two trillion, two hundred thirty-three billion, three hundred thirty-two million, two hundred twenty thousand, two hundred twenty-one".