221101222212011 has 8 divisors (see below), whose sum is σ = 222248305848240. Its totient is φ = 219954153848832.

The previous prime is 221101222212007. The next prime is 221101222212037. The reversal of 221101222212011 is 110212222101122.

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 221101222212011 - 2² = 221101222212007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221101222212511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25804556 + ... + 33287798.

It is an arithmetic number, because the mean of its divisors is an integer number (27781038231030).

Almost surely, 2^{221101222212011} is an apocalyptic number.

221101222212011 is a deficient number, since it is larger than the sum of its proper divisors (1147083636229).

221101222212011 is a wasteful number, since it uses less digits than its factorization.

221101222212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636525.

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

Adding to 221101222212011 its reverse (110212222101122), we get a palindrome (331313444313133).

The spelling of 221101222212011 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twenty-two million, two hundred twelve thousand, eleven".