220202201112121 has 4 divisors (see below), whose sum is σ = 220557939725200. Its totient is φ = 219846462499044.

The previous prime is 220202201112059. The next prime is 220202201112151. The reversal of 220202201112121 is 121211102202022.

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 220202201112121 - 2¹⁹ = 220202200587833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220202201112151) 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, 177869305611 + ... + 177869306848.

It is an arithmetic number, because the mean of its divisors is an integer number (55139484931300).

Almost surely, 2^{220202201112121} is an apocalyptic number.

It is an amenable number.

220202201112121 is a deficient number, since it is larger than the sum of its proper divisors (355738613079).

220202201112121 is an equidigital number, since it uses as much as digits as its factorization.

220202201112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355738613078.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220202201112121 its reverse (121211102202022), we get a palindrome (341413303314143).

The spelling of 220202201112121 in words is "two hundred twenty trillion, two hundred two billion, two hundred one million, one hundred twelve thousand, one hundred twenty-one".