201002001121 has 4 divisors (see below), whose sum is σ = 201107405232. Its totient is φ = 200896597012.

The previous prime is 201002001113. The next prime is 201002001127. The reversal of 201002001121 is 121100200102.

201002001121 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 201002001121 - 2³ = 201002001113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201002001098 and 201002001107.

It is not an unprimeable number, because it can be changed into a prime (201002001127) 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 3 ways as a sum of consecutive naturals, for example, 52699195 + ... + 52703008.

It is an arithmetic number, because the mean of its divisors is an integer number (50276851308).

Almost surely, 2^201002001121 is an apocalyptic number.

It is an amenable number.

201002001121 is a deficient number, since it is larger than the sum of its proper divisors (105404111).

201002001121 is a wasteful number, since it uses less digits than its factorization.

201002001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105404110.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201002001121 its reverse (121100200102), we get a palindrome (322102201223).

The spelling of 201002001121 in words is "two hundred one billion, two million, one thousand, one hundred twenty-one".