211955147 has 2 divisors, whose sum is σ = 211955148. Its totient is φ = 211955146.

The previous prime is 211955131. The next prime is 211955173. The reversal of 211955147 is 741559112.

It is a happy number.

211955147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211955147 - 2⁴ = 211955131 is a prime.

It is not a weakly prime, because it can be changed into another prime (211955747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105977573 + 105977574.

It is an arithmetic number, because the mean of its divisors is an integer number (105977574).

Almost surely, 2^211955147 is an apocalyptic number.

211955147 is a deficient number, since it is larger than the sum of its proper divisors (1).

211955147 is an equidigital number, since it uses as much as digits as its factorization.

211955147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 35.

The square root of 211955147 is about 14558.6794387403. The cubic root of 211955147 is about 596.2311414851.

The spelling of 211955147 in words is "two hundred eleven million, nine hundred fifty-five thousand, one hundred forty-seven".