2111212144 has 10 divisors (see below), whose sum is σ = 4090473560. Its totient is φ = 1055606064.

The previous prime is 2111212097. The next prime is 2111212157. The reversal of 2111212144 is 4412121112.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65975364 + ... + 65975395.

It is an arithmetic number, because the mean of its divisors is an integer number (409047356).

Almost surely, 2^2111212144 is an apocalyptic number.

It is an amenable number.

2111212144 is a deficient number, since it is larger than the sum of its proper divisors (1979261416).

2111212144 is a wasteful number, since it uses less digits than its factorization.

2111212144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131950767 (or 131950761 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

The square root of 2111212144 is about 45947.9286149006. The cubic root of 2111212144 is about 1282.8541745827.

Adding to 2111212144 its reverse (4412121112), we get a palindrome (6523333256).

The spelling of 2111212144 in words is "two billion, one hundred eleven million, two hundred twelve thousand, one hundred forty-four".