122987071 has 2 divisors, whose sum is σ = 122987072. Its totient is φ = 122987070.

The previous prime is 122987063. The next prime is 122987077. The reversal of 122987071 is 170789221.

It is a strong prime.

It is an emirp because it is prime and its reverse (170789221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122987071 - 2³ = 122987063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122987071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122987077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61493535 + 61493536.

It is an arithmetic number, because the mean of its divisors is an integer number (61493536).

Almost surely, 2^122987071 is an apocalyptic number.

122987071 is a deficient number, since it is larger than the sum of its proper divisors (1).

122987071 is an equidigital number, since it uses as much as digits as its factorization.

122987071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 122987071 is about 11089.9536067560. The cubic root of 122987071 is about 497.3015576834.

The spelling of 122987071 in words is "one hundred twenty-two million, nine hundred eighty-seven thousand, seventy-one".