2144021377 has 2 divisors, whose sum is σ = 2144021378. Its totient is φ = 2144021376.

The previous prime is 2144021371. The next prime is 2144021393. The reversal of 2144021377 is 7731204412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1440657936 + 703363441 = 37956^2 + 26521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2144021377 is a prime.

It is a super-2 number, since 2×2144021377² = 9193655330065952258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2144021371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072010688 + 1072010689.

It is an arithmetic number, because the mean of its divisors is an integer number (1072010689).

Almost surely, 2^2144021377 is an apocalyptic number.

It is an amenable number.

2144021377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144021377 is an equidigital number, since it uses as much as digits as its factorization.

2144021377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 2144021377 is about 46303.5784470272. The cubic root of 2144021377 is about 1289.4654310130.

Adding to 2144021377 its reverse (7731204412), we get a palindrome (9875225789).

The spelling of 2144021377 in words is "two billion, one hundred forty-four million, twenty-one thousand, three hundred seventy-seven".