201220202001 has 32 divisors (see below), whose sum is σ = 331936432128. Its totient is φ = 105582404160.

The previous prime is 201220201997. The next prime is 201220202009. The reversal of 201220202001 is 100202022102.

201220202001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201220202001 - 2² = 201220201997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201220202009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1877361 + ... + 1981646.

It is an arithmetic number, because the mean of its divisors is an integer number (10373013504).

Almost surely, 2^201220202001 is an apocalyptic number.

201220202001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201220202001 is a deficient number, since it is larger than the sum of its proper divisors (130716230127).

201220202001 is a wasteful number, since it uses less digits than its factorization.

201220202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859221.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 201220202001 its reverse (100202022102), we get a palindrome (301422224103).

The spelling of 201220202001 in words is "two hundred one billion, two hundred twenty million, two hundred two thousand, one".