220000222121 has 16 divisors (see below), whose sum is σ = 233924792640. Its totient is φ = 206311147200.

The previous prime is 220000222103. The next prime is 220000222147. The reversal of 220000222121 is 121222000022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220000222121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220000222096 and 220000222105.

It is not an unprimeable number, because it can be changed into a prime (220000422121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10895591 + ... + 10915763.

It is an arithmetic number, because the mean of its divisors is an integer number (14620299540).

Almost surely, 2^220000222121 is an apocalyptic number.

It is an amenable number.

220000222121 is a deficient number, since it is larger than the sum of its proper divisors (13924570519).

220000222121 is a wasteful number, since it uses less digits than its factorization.

220000222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25976.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220000222121 its reverse (121222000022), we get a palindrome (341222222143).

The spelling of 220000222121 in words is "two hundred twenty billion, two hundred twenty-two thousand, one hundred twenty-one".