222021212111011 has 4 divisors (see below), whose sum is σ = 222367579057224. Its totient is φ = 221674845164800.

The previous prime is 222021212110979. The next prime is 222021212111021. The reversal of 222021212111011 is 110111212120222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 222021212111011 - 2⁵ = 222021212110979 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 222021212111011.

It is not an unprimeable number, because it can be changed into a prime (222021212111021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173183472145 + ... + 173183473426.

It is an arithmetic number, because the mean of its divisors is an integer number (55591894764306).

Almost surely, 2^{222021212111011} is an apocalyptic number.

222021212111011 is a deficient number, since it is larger than the sum of its proper divisors (346366946213).

222021212111011 is an equidigital number, since it uses as much as digits as its factorization.

222021212111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346366946212.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222021212111011 its reverse (110111212120222), we get a palindrome (332132424231233).

The spelling of 222021212111011 in words is "two hundred twenty-two trillion, twenty-one billion, two hundred twelve million, one hundred eleven thousand, eleven".