222210011011221 has 8 divisors (see below), whose sum is σ = 329200016312960. Its totient is φ = 148140007340796.

The previous prime is 222210011011217. The next prime is 222210011011231. The reversal of 222210011011221 is 122110110012222.

222210011011221 is a `hidden beast` number, since 2 + 222 + 100 + 110 + 11 + 221 = 666.

It is not a de Polignac number, because 222210011011221 - 2² = 222210011011217 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 = 222210011011194 and 222210011011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222210011011201) 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, 4115000203885 + ... + 4115000203938.

It is an arithmetic number, because the mean of its divisors is an integer number (41150002039120).

Almost surely, 2^{222210011011221} is an apocalyptic number.

It is an amenable number.

222210011011221 is a deficient number, since it is larger than the sum of its proper divisors (106990005301739).

222210011011221 is an equidigital number, since it uses as much as digits as its factorization.

222210011011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8230000407832 (or 8230000407826 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222210011011221 its reverse (122110110012222), we get a palindrome (344320121023443).

The spelling of 222210011011221 in words is "two hundred twenty-two trillion, two hundred ten billion, eleven million, eleven thousand, two hundred twenty-one".