2102011121 has 16 divisors (see below), whose sum is σ = 2545173504. Its totient is φ = 1694697984.

The previous prime is 2102011103. The next prime is 2102011133. The reversal of 2102011121 is 1211102012.

It is a de Polignac number, because none of the positive numbers 2^k-2102011121 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 (2102011151) 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, 232736 + ... + 241598.

It is an arithmetic number, because the mean of its divisors is an integer number (159073344).

Almost surely, 2^2102011121 is an apocalyptic number.

It is an amenable number.

2102011121 is a deficient number, since it is larger than the sum of its proper divisors (443162383).

2102011121 is a wasteful number, since it uses less digits than its factorization.

2102011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10880.

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

The square root of 2102011121 is about 45847.6948275483. The cubic root of 2102011121 is about 1280.9878281549.

Adding to 2102011121 its reverse (1211102012), we get a palindrome (3313113133).

The spelling of 2102011121 in words is "two billion, one hundred two million, eleven thousand, one hundred twenty-one".