2111131421 has 8 divisors (see below), whose sum is σ = 2414086080. Its totient is φ = 1808517888.

The previous prime is 2111131409. The next prime is 2111131423. The reversal of 2111131421 is 1241311112.

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 2111131421 - 2²² = 2106937117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111131421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111131423) 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, 71876 + ... + 96893.

It is an arithmetic number, because the mean of its divisors is an integer number (301760760).

Almost surely, 2^2111131421 is an apocalyptic number.

It is an amenable number.

2111131421 is a deficient number, since it is larger than the sum of its proper divisors (302954659).

2111131421 is a wasteful number, since it uses less digits than its factorization.

2111131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170563.

The product of its digits is 48, while the sum is 17.

The square root of 2111131421 is about 45947.0501882330. The cubic root of 2111131421 is about 1282.8378242351.

Adding to 2111131421 its reverse (1241311112), we get a palindrome (3352442533).

The spelling of 2111131421 in words is "two billion, one hundred eleven million, one hundred thirty-one thousand, four hundred twenty-one".