212971211 has 2 divisors, whose sum is σ = 212971212. Its totient is φ = 212971210.

The previous prime is 212971159. The next prime is 212971219. The reversal of 212971211 is 112179212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212971211 - 2¹⁴ = 212954827 is a prime.

It is not a weakly prime, because it can be changed into another prime (212971219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106485605 + 106485606.

It is an arithmetic number, because the mean of its divisors is an integer number (106485606).

Almost surely, 2^212971211 is an apocalyptic number.

212971211 is a deficient number, since it is larger than the sum of its proper divisors (1).

212971211 is an equidigital number, since it uses as much as digits as its factorization.

212971211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 26.

The square root of 212971211 is about 14593.5331911090. The cubic root of 212971211 is about 597.1823545772.

The spelling of 212971211 in words is "two hundred twelve million, nine hundred seventy-one thousand, two hundred eleven".