212245151 has 4 divisors (see below), whose sum is σ = 217421904. Its totient is φ = 207068400.

The previous prime is 212245129. The next prime is 212245157. The reversal of 212245151 is 151542212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212245151 - 2¹⁴ = 212228767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212245157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2588315 + ... + 2588396.

It is an arithmetic number, because the mean of its divisors is an integer number (54355476).

Almost surely, 2^212245151 is an apocalyptic number.

212245151 is a deficient number, since it is larger than the sum of its proper divisors (5176753).

212245151 is an equidigital number, since it uses as much as digits as its factorization.

212245151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176752.

The product of its digits is 800, while the sum is 23.

The square root of 212245151 is about 14568.6358661338. The cubic root of 212245151 is about 596.5029452419.

Adding to 212245151 its reverse (151542212), we get a palindrome (363787363).

The spelling of 212245151 in words is "two hundred twelve million, two hundred forty-five thousand, one hundred fifty-one".