212613077 has 2 divisors, whose sum is σ = 212613078. Its totient is φ = 212613076.

The previous prime is 212613061. The next prime is 212613133. The reversal of 212613077 is 770316212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210801361 + 1811716 = 14519^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 212613077 - 2⁴ = 212613061 is a prime.

It is a super-2 number, since 2×212613077² = 90408641022815858, which contains 22 as substring.

It is equal to p_11737811 and since 212613077 and 11737811 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212613277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106306538 + 106306539.

It is an arithmetic number, because the mean of its divisors is an integer number (106306539).

Almost surely, 2^212613077 is an apocalyptic number.

It is an amenable number.

212613077 is a deficient number, since it is larger than the sum of its proper divisors (1).

212613077 is an equidigital number, since it uses as much as digits as its factorization.

212613077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 212613077 is about 14581.2577303880. The cubic root of 212613077 is about 596.8474246446.

Adding to 212613077 its reverse (770316212), we get a palindrome (982929289).

The spelling of 212613077 in words is "two hundred twelve million, six hundred thirteen thousand, seventy-seven".