20212001210911 has 2 divisors, whose sum is σ = 20212001210912. Its totient is φ = 20212001210910.

The previous prime is 20212001210887. The next prime is 20212001211001. The reversal of 20212001210911 is 11901210021202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212001210911 - 2⁹ = 20212001210399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212031210911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106000605455 + 10106000605456.

It is an arithmetic number, because the mean of its divisors is an integer number (10106000605456).

Almost surely, 2^{20212001210911} is an apocalyptic number.

20212001210911 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212001210911 is an equidigital number, since it uses as much as digits as its factorization.

20212001210911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 20212001210911 in words is "twenty trillion, two hundred twelve billion, one million, two hundred ten thousand, nine hundred eleven".