20110201201001 has 4 divisors (see below), whose sum is σ = 20110228139904. Its totient is φ = 20110174262100.

The previous prime is 20110201200937. The next prime is 20110201201037. The reversal of 20110201201001 is 10010210201102.

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 20110201201001 - 2⁶ = 20110201200937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20110201201201) 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, 12316805 + ... + 13853666.

It is an arithmetic number, because the mean of its divisors is an integer number (5027557034976).

Almost surely, 2^{20110201201001} is an apocalyptic number.

It is an amenable number.

20110201201001 is a deficient number, since it is larger than the sum of its proper divisors (26938903).

20110201201001 is an equidigital number, since it uses as much as digits as its factorization.

20110201201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26938902.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110201201001 its reverse (10010210201102), we get a palindrome (30120411402103).

The spelling of 20110201201001 in words is "twenty trillion, one hundred ten billion, two hundred one million, two hundred one thousand, one".