212133000001 has 4 divisors (see below), whose sum is σ = 228450923092. Its totient is φ = 195815076912.

The previous prime is 212132999987. The next prime is 212133000019. The reversal of 212133000001 is 100000331212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44753825601 + 167379174400 = 211551^2 + 409120^2 .

It is not a de Polignac number, because 212133000001 - 2⁹ = 212132999489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 16317923077 = 212133000001 / (2 + 1 + 2 + 1 + 3 + 3 + 0 + 0 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212133000601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8158961526 + ... + 8158961551.

It is an arithmetic number, because the mean of its divisors is an integer number (57112730773).

Almost surely, 2^212133000001 is an apocalyptic number.

It is an amenable number.

212133000001 is a deficient number, since it is larger than the sum of its proper divisors (16317923091).

212133000001 is a wasteful number, since it uses less digits than its factorization.

212133000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16317923090.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 212133000001 its reverse (100000331212), we get a palindrome (312133331213).

The spelling of 212133000001 in words is "two hundred twelve billion, one hundred thirty-three million, one", and thus it is an aban number.