20211140377 has 2 divisors, whose sum is σ = 20211140378. Its totient is φ = 20211140376.

The previous prime is 20211140371. The next prime is 20211140393. The reversal of 20211140377 is 77304111202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18346973401 + 1864166976 = 135451^2 + 43176^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211140377 - 2⁷ = 20211140249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211140371) by changing a digit.

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, 10105570188 + 10105570189.

It is an arithmetic number, because the mean of its divisors is an integer number (10105570189).

Almost surely, 2^20211140377 is an apocalyptic number.

It is an amenable number.

20211140377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211140377 is an equidigital number, since it uses as much as digits as its factorization.

20211140377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

Adding to 20211140377 its reverse (77304111202), we get a palindrome (97515251579).

The spelling of 20211140377 in words is "twenty billion, two hundred eleven million, one hundred forty thousand, three hundred seventy-seven".