212520151 has 2 divisors, whose sum is σ = 212520152. Its totient is φ = 212520150.

The previous prime is 212520137. The next prime is 212520173. The reversal of 212520151 is 151025212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212520151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212520101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106260075 + 106260076.

It is an arithmetic number, because the mean of its divisors is an integer number (106260076).

Almost surely, 2^212520151 is an apocalyptic number.

212520151 is a deficient number, since it is larger than the sum of its proper divisors (1).

212520151 is an equidigital number, since it uses as much as digits as its factorization.

212520151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 212520151 is about 14578.0708943262. The cubic root of 212520151 is about 596.7604580183.

Adding to 212520151 its reverse (151025212), we get a palindrome (363545363).

The spelling of 212520151 in words is "two hundred twelve million, five hundred twenty thousand, one hundred fifty-one".