20331212032867 has 2 divisors, whose sum is σ = 20331212032868. Its totient is φ = 20331212032866.

The previous prime is 20331212032861. The next prime is 20331212032883. The reversal of 20331212032867 is 76823021213302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20331212032867 - 2¹¹ = 20331212030819 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331212032861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165606016433 + 10165606016434.

It is an arithmetic number, because the mean of its divisors is an integer number (10165606016434).

Almost surely, 2^{20331212032867} is an apocalyptic number.

20331212032867 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331212032867 is an equidigital number, since it uses as much as digits as its factorization.

20331212032867 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 40.

The spelling of 20331212032867 in words is "twenty trillion, three hundred thirty-one billion, two hundred twelve million, thirty-two thousand, eight hundred sixty-seven".