220101111121 has 8 divisors (see below), whose sum is σ = 229802232384. Its totient is φ = 210410948880.

The previous prime is 220101111101. The next prime is 220101111143. The reversal of 220101111121 is 121111101022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220101111121 - 2³⁵ = 185741372753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220101111101) 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, 2698690 + ... + 2779051.

It is an arithmetic number, because the mean of its divisors is an integer number (28725279048).

Almost surely, 2^220101111121 is an apocalyptic number.

It is an amenable number.

220101111121 is a deficient number, since it is larger than the sum of its proper divisors (9701121263).

220101111121 is a wasteful number, since it uses less digits than its factorization.

220101111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479511.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 220101111121 its reverse (121111101022), we get a palindrome (341212212143).

The spelling of 220101111121 in words is "two hundred twenty billion, one hundred one million, one hundred eleven thousand, one hundred twenty-one".