12212001687923 has 2 divisors, whose sum is σ = 12212001687924. Its totient is φ = 12212001687922.

The previous prime is 12212001687887. The next prime is 12212001687937. The reversal of 12212001687923 is 32978610021221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12212001687923 - 2¹⁸ = 12212001425779 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212001686923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106000843961 + 6106000843962.

It is an arithmetic number, because the mean of its divisors is an integer number (6106000843962).

Almost surely, 2^{12212001687923} is an apocalyptic number.

12212001687923 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212001687923 is an equidigital number, since it uses as much as digits as its factorization.

12212001687923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 12212001687923 in words is "twelve trillion, two hundred twelve billion, one million, six hundred eighty-seven thousand, nine hundred twenty-three".