2221155 has 16 divisors (see below), whose sum is σ = 3948960. Its totient is φ = 1184544.

The previous prime is 2221129. The next prime is 2221159. The reversal of 2221155 is 5511222.

It is not a de Polignac number, because 2221155 - 2⁹ = 2220643 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2221159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8092 + ... + 8361.

It is an arithmetic number, because the mean of its divisors is an integer number (246810).

2^2221155 is an apocalyptic number.

2221155 is a deficient number, since it is larger than the sum of its proper divisors (1727805).

2221155 is a wasteful number, since it uses less digits than its factorization.

2221155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16467 (or 16461 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 2221155 is about 1490.3539847969. The cubic root of 2221155 is about 130.4746945252.

Adding to 2221155 its reverse (5511222), we get a palindrome (7732377).

The spelling of 2221155 in words is "two million, two hundred twenty-one thousand, one hundred fifty-five".