212012000122157 has 2 divisors, whose sum is σ = 212012000122158. Its totient is φ = 212012000122156.

The previous prime is 212012000122103. The next prime is 212012000122217. The reversal of 212012000122157 is 751221000210212.

212012000122157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151692452689801 + 60319547432356 = 12316349^2 + 7766566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212012000122157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012000122957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006000061078 + 106006000061079.

It is an arithmetic number, because the mean of its divisors is an integer number (106006000061079).

Almost surely, 2^{212012000122157} is an apocalyptic number.

It is an amenable number.

212012000122157 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012000122157 is an equidigital number, since it uses as much as digits as its factorization.

212012000122157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 212012000122157 its reverse (751221000210212), we get a palindrome (963233000332369).

The spelling of 212012000122157 in words is "two hundred twelve trillion, twelve billion, one hundred twenty-two thousand, one hundred fifty-seven".