122087971 has 2 divisors, whose sum is σ = 122087972. Its totient is φ = 122087970.

The previous prime is 122087969. The next prime is 122087993. The reversal of 122087971 is 179780221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122087971 - 2¹ = 122087969 is a prime.

Together with 122087969, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 122087971.

It is not a weakly prime, because it can be changed into another prime (122087921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61043985 + 61043986.

It is an arithmetic number, because the mean of its divisors is an integer number (61043986).

Almost surely, 2^122087971 is an apocalyptic number.

122087971 is a deficient number, since it is larger than the sum of its proper divisors (1).

122087971 is an equidigital number, since it uses as much as digits as its factorization.

122087971 is an evil number, because the sum of its binary digits is even.

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

The square root of 122087971 is about 11049.3425596277. The cubic root of 122087971 is about 496.0867474771.

The spelling of 122087971 in words is "one hundred twenty-two million, eighty-seven thousand, nine hundred seventy-one".