212786350081 has 8 divisors (see below), whose sum is σ = 216569750504. Its totient is φ = 209012469120.

The previous prime is 212786350031. The next prime is 212786350109. The reversal of 212786350081 is 180053687212.

It can be written as a sum of positive squares in 4 ways, for example, as 29109819456 + 183676530625 = 170616^2 + 428575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212786350081 - 2¹⁹ = 212785825793 is a prime.

It is a super-2 number, since 2×212786350081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212786350031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2334756 + ... + 2424181.

It is an arithmetic number, because the mean of its divisors is an integer number (27071218813).

Almost surely, 2^212786350081 is an apocalyptic number.

It is an amenable number.

212786350081 is a deficient number, since it is larger than the sum of its proper divisors (3783400423).

212786350081 is an equidigital number, since it uses as much as digits as its factorization.

212786350081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759731.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 212786350081 in words is "two hundred twelve billion, seven hundred eighty-six million, three hundred fifty thousand, eighty-one".