201220000001 has 4 divisors (see below), whose sum is σ = 201241077504. Its totient is φ = 201198922500.

The previous prime is 201219999913. The next prime is 201220000049. The reversal of 201220000001 is 100000022102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201220000001 - 2¹⁰ = 201219998977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201220000301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10524425 + ... + 10543526.

It is an arithmetic number, because the mean of its divisors is an integer number (50310269376).

Almost surely, 2^201220000001 is an apocalyptic number.

It is an amenable number.

201220000001 is a deficient number, since it is larger than the sum of its proper divisors (21077503).

201220000001 is an equidigital number, since it uses as much as digits as its factorization.

201220000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21077502.

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

Adding to 201220000001 its reverse (100000022102), we get a palindrome (301220022103).

The spelling of 201220000001 in words is "two hundred one billion, two hundred twenty million, one", and thus it is an aban number.