220111202121 has 8 divisors (see below), whose sum is σ = 293527563840. Its totient is φ = 146717820912.

The previous prime is 220111202117. The next prime is 220111202197. The reversal of 220111202121 is 121202111022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220111202121 - 2² = 220111202117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220111202121.

It is not an unprimeable number, because it can be changed into a prime (220111202621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5722765 + ... + 5761098.

It is an arithmetic number, because the mean of its divisors is an integer number (36690945480).

Almost surely, 2^220111202121 is an apocalyptic number.

It is an amenable number.

220111202121 is a deficient number, since it is larger than the sum of its proper divisors (73416361719).

220111202121 is a wasteful number, since it uses less digits than its factorization.

220111202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11490255.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220111202121 its reverse (121202111022), we get a palindrome (341313313143).

The spelling of 220111202121 in words is "two hundred twenty billion, one hundred eleven million, two hundred two thousand, one hundred twenty-one".