212020007917 has 2 divisors, whose sum is σ = 212020007918. Its totient is φ = 212020007916.

The previous prime is 212020007911. The next prime is 212020007981. The reversal of 212020007917 is 719700020212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157435161961 + 54584845956 = 396781^2 + 233634^2 .

It is a cyclic number.

It is not a de Polignac number, because 212020007917 - 2³ = 212020007909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020007911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010003958 + 106010003959.

It is an arithmetic number, because the mean of its divisors is an integer number (106010003959).

Almost surely, 2^212020007917 is an apocalyptic number.

It is an amenable number.

212020007917 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020007917 is an equidigital number, since it uses as much as digits as its factorization.

212020007917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 31.

The spelling of 212020007917 in words is "two hundred twelve billion, twenty million, seven thousand, nine hundred seventeen".