201000020001 has 32 divisors (see below), whose sum is σ = 300552999936. Its totient is φ = 118412280000.

The previous prime is 201000019993. The next prime is 201000020009. The reversal of 201000020001 is 100020000102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201000019993) and next prime (201000020009).

It is not a de Polignac number, because 201000020001 - 2³ = 201000019993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201000020009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1204956 + ... + 1361586.

It is an arithmetic number, because the mean of its divisors is an integer number (9392281248).

Almost surely, 2^201000020001 is an apocalyptic number.

It is an amenable number.

201000020001 is a deficient number, since it is larger than the sum of its proper divisors (99552979935).

201000020001 is a wasteful number, since it uses less digits than its factorization.

201000020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157733.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 201000020001 its reverse (100020000102), we get a palindrome (301020020103).

The spelling of 201000020001 in words is "two hundred one billion, twenty thousand, one".