212020999999 has 2 divisors, whose sum is σ = 212021000000. Its totient is φ = 212020999998.

The previous prime is 212020999991. The next prime is 212021000017. The reversal of 212020999999 is 999999020212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212020999999 - 2³ = 212020999991 is a prime.

212020999999 is a modest number, since divided by 999999 gives 212020 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020999991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010499999 + 106010500000.

It is an arithmetic number, because the mean of its divisors is an integer number (106010500000).

Almost surely, 2^212020999999 is an apocalyptic number.

212020999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020999999 is an equidigital number, since it uses as much as digits as its factorization.

212020999999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4251528, while the sum is 61.

The spelling of 212020999999 in words is "two hundred twelve billion, twenty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".