212201000001 has 12 divisors (see below), whose sum is σ = 306516931812. Its totient is φ = 141465313536.

The previous prime is 212200999931. The next prime is 212201000017. The reversal of 212201000001 is 100000102212.

It can be written as a sum of positive squares in 2 ways, for example, as 41591523600 + 170609476401 = 203940^2 + 413049^2 .

It is not a de Polignac number, because 212201000001 - 2⁹ = 212200999489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (212201000041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 775765 + ... + 1013021.

It is an arithmetic number, because the mean of its divisors is an integer number (25543077651).

Almost surely, 2^212201000001 is an apocalyptic number.

It is an amenable number.

212201000001 is a deficient number, since it is larger than the sum of its proper divisors (94315931811).

212201000001 is a wasteful number, since it uses less digits than its factorization.

212201000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336640 (or 336637 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 212201000001 its reverse (100000102212), we get a palindrome (312201102213).

The spelling of 212201000001 in words is "two hundred twelve billion, two hundred one million, one", and thus it is an aban number.