2121258371 has 8 divisors (see below), whose sum is σ = 2145506160. Its totient is φ = 2097059328.

The previous prime is 2121258343. The next prime is 2121258397. The reversal of 2121258371 is 1738521212.

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 2121258371 - 2²⁶ = 2054149507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121258071) 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, 79220 + ... + 102558.

It is an arithmetic number, because the mean of its divisors is an integer number (268188270).

Almost surely, 2^2121258371 is an apocalyptic number.

2121258371 is a deficient number, since it is larger than the sum of its proper divisors (24247789).

2121258371 is an equidigital number, since it uses as much as digits as its factorization.

2121258371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24373.

The product of its digits is 6720, while the sum is 32.

The square root of 2121258371 is about 46057.1207415314. The cubic root of 2121258371 is about 1284.8857809019.

Adding to 2121258371 its reverse (1738521212), we get a palindrome (3859779583).

The spelling of 2121258371 in words is "two billion, one hundred twenty-one million, two hundred fifty-eight thousand, three hundred seventy-one".