220022222121 has 48 divisors (see below), whose sum is σ = 347548079424. Its totient is φ = 133307171712.

The previous prime is 220022222117. The next prime is 220022222153. The reversal of 220022222121 is 121222220022.

220022222121 is a `hidden beast` number, since 2 + 200 + 222 + 221 + 21 = 666.

220022222121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220022222121 - 2² = 220022222117 is a prime.

It is a super-3 number, since 3×220022222121³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220022222094 and 220022222103.

It is not an unprimeable number, because it can be changed into a prime (220022222521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17529570 + ... + 17542116.

It is an arithmetic number, because the mean of its divisors is an integer number (7240584988).

Almost surely, 2^220022222121 is an apocalyptic number.

It is an amenable number.

220022222121 is a deficient number, since it is larger than the sum of its proper divisors (127525857303).

220022222121 is a wasteful number, since it uses less digits than its factorization.

220022222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14870 (or 14867 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 220022222121 its reverse (121222220022), we get a palindrome (341244442143).

The spelling of 220022222121 in words is "two hundred twenty billion, twenty-two million, two hundred twenty-two thousand, one hundred twenty-one".