201121002011 has 8 divisors (see below), whose sum is σ = 204940301904. Its totient is φ = 197302612000.

The previous prime is 201121001981. The next prime is 201121002023. The reversal of 201121002011 is 110200121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201121002011 - 2²⁶ = 201053893147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201121001983 and 201121002001.

It is not an unprimeable number, because it can be changed into a prime (201121002911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227360 + ... + 673746.

It is an arithmetic number, because the mean of its divisors is an integer number (25617537738).

Almost surely, 2^201121002011 is an apocalyptic number.

201121002011 is a deficient number, since it is larger than the sum of its proper divisors (3819299893).

201121002011 is an equidigital number, since it uses as much as digits as its factorization.

201121002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454941.

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

Adding to 201121002011 its reverse (110200121102), we get a palindrome (311321123113).

The spelling of 201121002011 in words is "two hundred one billion, one hundred twenty-one million, two thousand, eleven".