212303077 has 16 divisors (see below), whose sum is σ = 249742080. Its totient is φ = 176663808.

The previous prime is 212303071. The next prime is 212303137. The reversal of 212303077 is 770303212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212303077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216813 + ... + 217789.

It is an arithmetic number, because the mean of its divisors is an integer number (15608880).

Almost surely, 2^212303077 is an apocalyptic number.

It is an amenable number.

212303077 is a deficient number, since it is larger than the sum of its proper divisors (37439003).

212303077 is an equidigital number, since it uses as much as digits as its factorization.

212303077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 212303077 is about 14570.6237683910. The cubic root of 212303077 is about 596.5572062172.

Adding to 212303077 its reverse (770303212), we get a palindrome (982606289).

The spelling of 212303077 in words is "two hundred twelve million, three hundred three thousand, seventy-seven".