222222012022221 has 16 divisors (see below), whose sum is σ = 296431510330368. Its totient is φ = 148080262590000.

The previous prime is 222222012022217. The next prime is 222222012022247. The reversal of 222222012022221 is 122220210222222.

It is not a de Polignac number, because 222222012022221 - 2² = 222222012022217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222222012022191 and 222222012022200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222012722221) 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 15 ways as a sum of consecutive naturals, for example, 674939580 + ... + 675268746.

It is an arithmetic number, because the mean of its divisors is an integer number (18526969395648).

Almost surely, 2^{222222012022221} is an apocalyptic number.

It is an amenable number.

222222012022221 is a deficient number, since it is larger than the sum of its proper divisors (74209498308147).

222222012022221 is a wasteful number, since it uses less digits than its factorization.

222222012022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431392.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 222222012022221 its reverse (122220210222222), we get a palindrome (344442222244443).

The spelling of 222222012022221 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, twelve million, twenty-two thousand, two hundred twenty-one".