2211155 has 8 divisors (see below), whose sum is σ = 2678832. Its totient is φ = 1751968.

The previous prime is 2211127. The next prime is 2211161. The reversal of 2211155 is 5511122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211155 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532 + ... + 2601.

It is an arithmetic number, because the mean of its divisors is an integer number (334854).

2^2211155 is an apocalyptic number.

2211155 is a deficient number, since it is larger than the sum of its proper divisors (467677).

2211155 is a wasteful number, since it uses less digits than its factorization.

2211155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245.

The product of its digits is 100, while the sum is 17.

The square root of 2211155 is about 1486.9952925279. The cubic root of 2211155 is about 130.2785938601.

Adding to 2211155 its reverse (5511122), we get a palindrome (7722277).

It can be divided in two parts, 221 and 1155, that multiplied together give a triangular number (255255 = T₇₁₄).

The spelling of 2211155 in words is "two million, two hundred eleven thousand, one hundred fifty-five".