212020218937 has 2 divisors, whose sum is σ = 212020218938. Its totient is φ = 212020218936.

The previous prime is 212020218913. The next prime is 212020218997. The reversal of 212020218937 is 739812020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153582474816 + 58437744121 = 391896^2 + 241739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212020218937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212020218896 and 212020218905.

It is not a weakly prime, because it can be changed into another prime (212020218997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010109468 + 106010109469.

It is an arithmetic number, because the mean of its divisors is an integer number (106010109469).

Almost surely, 2^212020218937 is an apocalyptic number.

It is an amenable number.

212020218937 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020218937 is an equidigital number, since it uses as much as digits as its factorization.

212020218937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 212020218937 in words is "two hundred twelve billion, twenty million, two hundred eighteen thousand, nine hundred thirty-seven".