122202132221 has 4 divisors (see below), whose sum is σ = 131602296252. Its totient is φ = 112801968192.

The previous prime is 122202132187. The next prime is 122202132229. The reversal of 122202132221 is 122231202221.

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 76571191225 + 45630940996 = 276715^2 + 213614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122202132221 is a prime.

It is a super-2 number, since 2×122202132221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122202132193 and 122202132202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122202132229) 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, 4700081996 + ... + 4700082021.

It is an arithmetic number, because the mean of its divisors is an integer number (32900574063).

Almost surely, 2^122202132221 is an apocalyptic number.

It is an amenable number.

122202132221 is a deficient number, since it is larger than the sum of its proper divisors (9400164031).

122202132221 is an equidigital number, since it uses as much as digits as its factorization.

122202132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9400164030.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 122202132221 its reverse (122231202221), we get a palindrome (244433334442).

The spelling of 122202132221 in words is "one hundred twenty-two billion, two hundred two million, one hundred thirty-two thousand, two hundred twenty-one".