972211187 has 2 divisors, whose sum is σ = 972211188. Its totient is φ = 972211186.

The previous prime is 972211157. The next prime is 972211189. The reversal of 972211187 is 781112279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 972211187 - 2¹² = 972207091 is a prime.

Together with 972211189, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 972211187.

It is not a weakly prime, because it can be changed into another prime (972211189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486105593 + 486105594.

It is an arithmetic number, because the mean of its divisors is an integer number (486105594).

Almost surely, 2^972211187 is an apocalyptic number.

972211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

972211187 is an equidigital number, since it uses as much as digits as its factorization.

972211187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 38.

The square root of 972211187 is about 31180.3012653823. The cubic root of 972211187 is about 990.6499106368.

The spelling of 972211187 in words is "nine hundred seventy-two million, two hundred eleven thousand, one hundred eighty-seven".