221101121222 has 8 divisors (see below), whose sum is σ = 331729565400. Its totient is φ = 110524599424.

The previous prime is 221101121209. The next prime is 221101121231. The reversal of 221101121222 is 222121101122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221101121222.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12969947 + ... + 12986982.

It is an arithmetic number, because the mean of its divisors is an integer number (41466195675).

Almost surely, 2^221101121222 is an apocalyptic number.

221101121222 is a deficient number, since it is larger than the sum of its proper divisors (110628444178).

221101121222 is a wasteful number, since it uses less digits than its factorization.

221101121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25961190.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221101121222 its reverse (222121101122), we get a palindrome (443222222344).

The spelling of 221101121222 in words is "two hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty-two".