122233331221 has 4 divisors (see below), whose sum is σ = 122242118092. Its totient is φ = 122224544352.

The previous prime is 122233331219. The next prime is 122233331261. The reversal of 122233331221 is 122133332221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72999934225 + 49233396996 = 270185^2 + 221886^2 .

It is a cyclic number.

It is not a de Polignac number, because 122233331221 - 2¹ = 122233331219 is a prime.

It is a super-2 number, since 2×122233331221² (a number of 23 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 (122233331261) 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, 4372536 + ... + 4400401.

It is an arithmetic number, because the mean of its divisors is an integer number (30560529523).

Almost surely, 2^122233331221 is an apocalyptic number.

It is an amenable number.

122233331221 is a deficient number, since it is larger than the sum of its proper divisors (8786871).

122233331221 is an equidigital number, since it uses as much as digits as its factorization.

122233331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8786870.

The product of its digits is 2592, while the sum is 25.

Adding to 122233331221 its reverse (122133332221), we get a palindrome (244366663442).

The spelling of 122233331221 in words is "one hundred twenty-two billion, two hundred thirty-three million, three hundred thirty-one thousand, two hundred twenty-one".