122420143431277 has 2 divisors, whose sum is σ = 122420143431278. Its totient is φ = 122420143431276.

The previous prime is 122420143431203. The next prime is 122420143431283. The reversal of 122420143431277 is 772134341024221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74498666450121 + 47921476981156 = 8631261^2 + 6922534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122420143431277 is a prime.

It is a super-2 number, since 2×122420143431277² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122420143431577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61210071715638 + 61210071715639.

It is an arithmetic number, because the mean of its divisors is an integer number (61210071715639).

Almost surely, 2^{122420143431277} is an apocalyptic number.

It is an amenable number.

122420143431277 is a deficient number, since it is larger than the sum of its proper divisors (1).

122420143431277 is an equidigital number, since it uses as much as digits as its factorization.

122420143431277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 43.

Adding to 122420143431277 its reverse (772134341024221), we get a palindrome (894554484455498).

The spelling of 122420143431277 in words is "one hundred twenty-two trillion, four hundred twenty billion, one hundred forty-three million, four hundred thirty-one thousand, two hundred seventy-seven".