220211221121 has 8 divisors (see below), whose sum is σ = 222897752064. Its totient is φ = 217539574560.

The previous prime is 220211221103. The next prime is 220211221133. The reversal of 220211221121 is 121122112022.

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 220211221121 - 2⁶ = 220211221057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220211221121.

It is not an unprimeable number, because it can be changed into a prime (220211221171) 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, 3691325 + ... + 3750506.

It is an arithmetic number, because the mean of its divisors is an integer number (27862219008).

Almost surely, 2^220211221121 is an apocalyptic number.

It is an amenable number.

220211221121 is a deficient number, since it is larger than the sum of its proper divisors (2686530943).

220211221121 is a wasteful number, since it uses less digits than its factorization.

220211221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442191.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220211221121 its reverse (121122112022), we get a palindrome (341333333143).

The spelling of 220211221121 in words is "two hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, one hundred twenty-one".