122111221 has 8 divisors (see below), whose sum is σ = 129397824. Its totient is φ = 114836160.

The previous prime is 122111219. The next prime is 122111279.

122111221 is nontrivially palindromic in base 10.

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 122111221 - 2¹ = 122111219 is a prime.

It is a super-2 number, since 2×122111221² = 29822300588221682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111281) 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, 29166 + ... + 33088.

It is an arithmetic number, because the mean of its divisors is an integer number (16174728).

Almost surely, 2^122111221 is an apocalyptic number.

It is an amenable number.

122111221 is a deficient number, since it is larger than the sum of its proper divisors (7286603).

122111221 is a wasteful number, since it uses less digits than its factorization.

122111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5771.

The product of its digits is 16, while the sum is 13.

The square root of 122111221 is about 11050.3946083387. The cubic root of 122111221 is about 496.1182364783.

The spelling of 122111221 in words is "one hundred twenty-two million, one hundred eleven thousand, two hundred twenty-one".