222121102011 has 16 divisors (see below), whose sum is σ = 297095971200. Its totient is φ = 147613998528.

The previous prime is 222121101929. The next prime is 222121102033. The reversal of 222121102011 is 110201121222.

It is not a de Polignac number, because 222121102011 - 2²² = 222116907707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222121104011) 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, 1687500 + ... + 1814358.

It is an arithmetic number, because the mean of its divisors is an integer number (18568498200).

Almost surely, 2^222121102011 is an apocalyptic number.

222121102011 is a deficient number, since it is larger than the sum of its proper divisors (74974869189).

222121102011 is a wasteful number, since it uses less digits than its factorization.

222121102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128698.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222121102011 its reverse (110201121222), we get a palindrome (332322223233).

The spelling of 222121102011 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred two thousand, eleven".