222220001020221 has 12 divisors (see below), whose sum is σ = 321042732615072. Its totient is φ = 148119765794376.

The previous prime is 222220001020207. The next prime is 222220001020223. The reversal of 222220001020221 is 122020100022222.

222220001020221 is a `hidden beast` number, since 2 + 222 + 200 + 0 + 1 + 0 + 20 + 221 = 666.

It is not a de Polignac number, because 222220001020221 - 2¹⁰ = 222220001019197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222220001020194 and 222220001020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220001020223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2241743721 + ... + 2241842846.

It is an arithmetic number, because the mean of its divisors is an integer number (26753561051256).

Almost surely, 2^{222220001020221} is an apocalyptic number.

It is an amenable number.

222220001020221 is a deficient number, since it is larger than the sum of its proper divisors (98822731594851).

222220001020221 is a wasteful number, since it uses less digits than its factorization.

222220001020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483592080 (or 4483592077 counting only the distinct ones).

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

Adding to 222220001020221 its reverse (122020100022222), we get a palindrome (344240101042443).

The spelling of 222220001020221 in words is "two hundred twenty-two trillion, two hundred twenty billion, one million, twenty thousand, two hundred twenty-one".