2122051271 has 4 divisors (see below), whose sum is σ = 2233738200. Its totient is φ = 2010364344.

The previous prime is 2122051237. The next prime is 2122051273. The reversal of 2122051271 is 1721502212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122051271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122051273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55843436 + ... + 55843473.

It is an arithmetic number, because the mean of its divisors is an integer number (558434550).

Almost surely, 2^2122051271 is an apocalyptic number.

2122051271 is a deficient number, since it is larger than the sum of its proper divisors (111686929).

2122051271 is a wasteful number, since it uses less digits than its factorization.

2122051271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111686928.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 2122051271 is about 46065.7277268036. The cubic root of 2122051271 is about 1285.0458524015.

Adding to 2122051271 its reverse (1721502212), we get a palindrome (3843553483).

The spelling of 2122051271 in words is "two billion, one hundred twenty-two million, fifty-one thousand, two hundred seventy-one".