222121322011 has 8 divisors (see below), whose sum is σ = 223590242304. Its totient is φ = 220653697320.

The previous prime is 222121321991. The next prime is 222121322021. The reversal of 222121322011 is 110223121222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222121322011 - 2¹¹ = 222121319963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222121322011.

It is not an unprimeable number, because it can be changed into a prime (222121322021) 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 7 ways as a sum of consecutive naturals, for example, 21330 + ... + 666856.

It is an arithmetic number, because the mean of its divisors is an integer number (27948780288).

Almost surely, 2^222121322011 is an apocalyptic number.

222121322011 is a deficient number, since it is larger than the sum of its proper divisors (1468920293).

222121322011 is a wasteful number, since it uses less digits than its factorization.

222121322011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647801.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 222121322011 its reverse (110223121222), we get a palindrome (332344443233).

The spelling of 222121322011 in words is "two hundred twenty-two billion, one hundred twenty-one million, three hundred twenty-two thousand, eleven".