222111122211002 has 4 divisors (see below), whose sum is σ = 333166683316506. Its totient is φ = 111055561105500.

The previous prime is 222111122211001. The next prime is 222111122211091. The reversal of 222111122211002 is 200112221111222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 221858373697921 + 252748513081 = 14894911^2 + 502741^2 .

It is not an unprimeable number, because it can be changed into a prime (222111122211001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55527780552749 + ... + 55527780552752.

Almost surely, 2^{222111122211002} is an apocalyptic number.

222111122211002 is a deficient number, since it is larger than the sum of its proper divisors (111055561105504).

222111122211002 is a wasteful number, since it uses less digits than its factorization.

222111122211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111055561105503.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222111122211002 its reverse (200112221111222), we get a palindrome (422223343322224).

The spelling of 222111122211002 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred eleven thousand, two".