2182111144 has 8 divisors (see below), whose sum is σ = 4091458410. Its totient is φ = 1091055568.

The previous prime is 2182111133. The next prime is 2182111171. The reversal of 2182111144 is 4411112812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1440202500 + 741908644 = 37950^2 + 27238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136381939 + ... + 136381954.

Almost surely, 2^2182111144 is an apocalyptic number.

It is an amenable number.

2182111144 is a deficient number, since it is larger than the sum of its proper divisors (1909347266).

2182111144 is a wasteful number, since it uses less digits than its factorization.

2182111144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272763899 (or 272763895 counting only the distinct ones).

The product of its digits is 512, while the sum is 25.

The square root of 2182111144 is about 46713.0725172301. The cubic root of 2182111144 is about 1297.0566831070.

Adding to 2182111144 its reverse (4411112812), we get a palindrome (6593223956).

The spelling of 2182111144 in words is "two billion, one hundred eighty-two million, one hundred eleven thousand, one hundred forty-four".