212012122001 has 8 divisors (see below), whose sum is σ = 216019206504. Its totient is φ = 208005291520.

The previous prime is 212012121991. The next prime is 212012122043. The reversal of 212012122001 is 100221210212.

It can be written as a sum of positive squares in 4 ways, for example, as 23538923776 + 188473198225 = 153424^2 + 434135^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 212012122001 - 2²² = 212007927697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212012122601) 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, 3042785 + ... + 3111681.

It is an arithmetic number, because the mean of its divisors is an integer number (27002400813).

Almost surely, 2^212012122001 is an apocalyptic number.

It is an amenable number.

212012122001 is a deficient number, since it is larger than the sum of its proper divisors (4007084503).

212012122001 is an equidigital number, since it uses as much as digits as its factorization.

212012122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127011.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212012122001 its reverse (100221210212), we get a palindrome (312233332213).

The spelling of 212012122001 in words is "two hundred twelve billion, twelve million, one hundred twenty-two thousand, one".