212013123787 has 2 divisors, whose sum is σ = 212013123788. Its totient is φ = 212013123786.

The previous prime is 212013123731. The next prime is 212013123851. The reversal of 212013123787 is 787321310212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212013123787 - 2⁷ = 212013123659 is a prime.

It is not a weakly prime, because it can be changed into another prime (212013153787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006561893 + 106006561894.

It is an arithmetic number, because the mean of its divisors is an integer number (106006561894).

Almost surely, 2^212013123787 is an apocalyptic number.

212013123787 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013123787 is an equidigital number, since it uses as much as digits as its factorization.

212013123787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

Adding to 212013123787 its reverse (787321310212), we get a palindrome (999334433999).

The spelling of 212013123787 in words is "two hundred twelve billion, thirteen million, one hundred twenty-three thousand, seven hundred eighty-seven".