212010023893 has 2 divisors, whose sum is σ = 212010023894. Its totient is φ = 212010023892.

The previous prime is 212010023881. The next prime is 212010023933. The reversal of 212010023893 is 398320010212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130712617764 + 81297406129 = 361542^2 + 285127^2 .

It is a cyclic number.

It is not a de Polignac number, because 212010023893 - 2⁵ = 212010023861 is a prime.

It is a super-2 number, since 2×212010023893² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212010023593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005011946 + 106005011947.

It is an arithmetic number, because the mean of its divisors is an integer number (106005011947).

Almost surely, 2^212010023893 is an apocalyptic number.

It is an amenable number.

212010023893 is a deficient number, since it is larger than the sum of its proper divisors (1).

212010023893 is an equidigital number, since it uses as much as digits as its factorization.

212010023893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 212010023893 in words is "two hundred twelve billion, ten million, twenty-three thousand, eight hundred ninety-three".