222220120221 has 32 divisors (see below), whose sum is σ = 365919949440. Its totient is φ = 132137740800.

The previous prime is 222220120217. The next prime is 222220120229. The reversal of 222220120221 is 122021022222.

222220120221 is a `hidden beast` number, since 2 + 222 + 201 + 20 + 221 = 666.

It is not a de Polignac number, because 222220120221 - 2² = 222220120217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222220120194 and 222220120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220120229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7042900 + ... + 7074381.

It is an arithmetic number, because the mean of its divisors is an integer number (11434998420).

Almost surely, 2^222220120221 is an apocalyptic number.

It is an amenable number.

222220120221 is a deficient number, since it is larger than the sum of its proper divisors (143699829219).

222220120221 is a wasteful number, since it uses less digits than its factorization.

222220120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14117354 (or 14117348 counting only the distinct ones).

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

Adding to 222220120221 its reverse (122021022222), we get a palindrome (344241142443).

It can be divided in two parts, 2222201 and 20221, that added together give a palindrome (2242422).

The spelling of 222220120221 in words is "two hundred twenty-two billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-one".