212212212001 has 6 divisors (see below), whose sum is σ = 214106828390. Its totient is φ = 210334215168.

The previous prime is 212212211983. The next prime is 212212212013. The reversal of 212212212001 is 100212212212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 36817934400 + 175394277601 = 191880^2 + 418801^2 .

It is not a de Polignac number, because 212212212001 - 2¹⁹ = 212211687713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212212212031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8296896 + ... + 8322433.

Almost surely, 2^212212212001 is an apocalyptic number.

It is an amenable number.

212212212001 is a deficient number, since it is larger than the sum of its proper divisors (1894616389).

212212212001 is an equidigital number, since it uses as much as digits as its factorization.

212212212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16619555 (or 16619442 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212212212001 its reverse (100212212212), we get a palindrome (312424424213).

The spelling of 212212212001 in words is "two hundred twelve billion, two hundred twelve million, two hundred twelve thousand, one".