220202011121 has 4 divisors (see below), whose sum is σ = 220203086244. Its totient is φ = 220200936000.

The previous prime is 220202011061. The next prime is 220202011163. The reversal of 220202011121 is 121110202022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 42977850721 + 177224160400 = 207311^2 + 420980^2 .

It is a cyclic number.

It is not a de Polignac number, because 220202011121 - 2¹⁴ = 220201994737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220202011096 and 220202011105.

It is not an unprimeable number, because it can be changed into a prime (220202011181) 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, 124580 + ... + 675221.

It is an arithmetic number, because the mean of its divisors is an integer number (55050771561).

Almost surely, 2^220202011121 is an apocalyptic number.

It is an amenable number.

220202011121 is a deficient number, since it is larger than the sum of its proper divisors (1075123).

220202011121 is an equidigital number, since it uses as much as digits as its factorization.

220202011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220202011121 its reverse (121110202022), we get a palindrome (341312213143).

The spelling of 220202011121 in words is "two hundred twenty billion, two hundred two million, eleven thousand, one hundred twenty-one".