212020011911 has 2 divisors, whose sum is σ = 212020011912. Its totient is φ = 212020011910.

The previous prime is 212020011881. The next prime is 212020011971. The reversal of 212020011911 is 119110020212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212020011911 - 2¹⁰ = 212020010887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020011971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010005955 + 106010005956.

It is an arithmetic number, because the mean of its divisors is an integer number (106010005956).

Almost surely, 2^212020011911 is an apocalyptic number.

212020011911 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020011911 is an equidigital number, since it uses as much as digits as its factorization.

212020011911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 212020011911 in words is "two hundred twelve billion, twenty million, eleven thousand, nine hundred eleven".