12202222220221 has 32 divisors (see below), whose sum is σ = 13473091104768. Its totient is φ = 10959109539840.

The previous prime is 12202222220197. The next prime is 12202222220297.

12202222220221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12202222220221 - 2¹⁷ = 12202222089149 is a prime.

It is a super-2 number, since 2×12202222220221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202222220192 and 12202222220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202222200221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361455475 + ... + 361489231.

It is an arithmetic number, because the mean of its divisors is an integer number (421034097024).

Almost surely, 2^{12202222220221} is an apocalyptic number.

12202222220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12202222220221 is a deficient number, since it is larger than the sum of its proper divisors (1270868884547).

12202222220221 is a wasteful number, since it uses less digits than its factorization.

12202222220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34981.

The product of its (nonzero) digits is 1024, while the sum is 22.

Multiplying 12202222220221 by its sum of digits (22), we get a palindrome (268448888844862).

It can be divided in two parts, 1220222 and 2220221, that added together give a palindrome (3440443).

The spelling of 12202222220221 in words is "twelve trillion, two hundred two billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty-one".