2121726147 has 8 divisors (see below), whose sum is σ = 2864778240. Its totient is φ = 1396579080.

The previous prime is 2121726137. The next prime is 2121726151. The reversal of 2121726147 is 7416271212.

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

It is not a de Polignac number, because 2121726147 - 2⁶ = 2121726083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121726107) 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, 4475979 + ... + 4476452.

It is an arithmetic number, because the mean of its divisors is an integer number (358097280).

Almost surely, 2^2121726147 is an apocalyptic number.

2121726147 is a deficient number, since it is larger than the sum of its proper divisors (743052093).

2121726147 is an equidigital number, since it uses as much as digits as its factorization.

2121726147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8952513.

The product of its digits is 9408, while the sum is 33.

The square root of 2121726147 is about 46062.1986774405. The cubic root of 2121726147 is about 1284.9802208445.

Adding to 2121726147 its reverse (7416271212), we get a palindrome (9537997359).

The spelling of 2121726147 in words is "two billion, one hundred twenty-one million, seven hundred twenty-six thousand, one hundred forty-seven".