201021110011121 has 16 divisors (see below), whose sum is σ = 203808416371200. Its totient is φ = 198239976168000.

The previous prime is 201021110011097. The next prime is 201021110011123. The reversal of 201021110011121 is 121110011120102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201021110011121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201021110011096 and 201021110011105.

It is not an unprimeable number, because it can be changed into a prime (201021110011123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302890196 + ... + 303553146.

It is an arithmetic number, because the mean of its divisors is an integer number (12738026023200).

Almost surely, 2^{201021110011121} is an apocalyptic number.

It is an amenable number.

201021110011121 is a deficient number, since it is larger than the sum of its proper divisors (2787306360079).

201021110011121 is a wasteful number, since it uses less digits than its factorization.

201021110011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667600.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201021110011121 its reverse (121110011120102), we get a palindrome (322131121131223).

The spelling of 201021110011121 in words is "two hundred one trillion, twenty-one billion, one hundred ten million, eleven thousand, one hundred twenty-one".