201101011002121 has 4 divisors (see below), whose sum is σ = 201103232638672. Its totient is φ = 201098789365572.

The previous prime is 201101011002119. The next prime is 201101011002149. The reversal of 201101011002121 is 121200110101102.

It is a happy number.

201101011002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201101011002121 - 2¹ = 201101011002119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201101011002181) 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, 1110682491 + ... + 1110863536.

It is an arithmetic number, because the mean of its divisors is an integer number (50275808159668).

Almost surely, 2^{201101011002121} is an apocalyptic number.

It is an amenable number.

201101011002121 is a deficient number, since it is larger than the sum of its proper divisors (2221636551).

201101011002121 is an equidigital number, since it uses as much as digits as its factorization.

201101011002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221636550.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201101011002121 its reverse (121200110101102), we get a palindrome (322301121103223).

The spelling of 201101011002121 in words is "two hundred one trillion, one hundred one billion, eleven million, two thousand, one hundred twenty-one".