211152251 has 2 divisors, whose sum is σ = 211152252. Its totient is φ = 211152250.

The previous prime is 211152241. The next prime is 211152287. The reversal of 211152251 is 152251112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211152251 is a prime.

It is not a weakly prime, because it can be changed into another prime (211152211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105576125 + 105576126.

It is an arithmetic number, because the mean of its divisors is an integer number (105576126).

Almost surely, 2^211152251 is an apocalyptic number.

211152251 is a deficient number, since it is larger than the sum of its proper divisors (1).

211152251 is an equidigital number, since it uses as much as digits as its factorization.

211152251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 200, while the sum is 20.

The square root of 211152251 is about 14531.0787968409. The cubic root of 211152251 is about 595.4773383947.

The spelling of 211152251 in words is "two hundred eleven million, one hundred fifty-two thousand, two hundred fifty-one".