2121183407 has 8 divisors (see below), whose sum is σ = 2424936576. Its totient is φ = 1817611992.

The previous prime is 2121183391. The next prime is 2121183409. The reversal of 2121183407 is 7043811212.

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

It is not a de Polignac number, because 2121183407 - 2⁴ = 2121183391 is a prime.

It is a super-2 number, since 2×2121183407² = 8998838092264255298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121183407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121183409) 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, 19433 + ... + 67970.

It is an arithmetic number, because the mean of its divisors is an integer number (303117072).

Almost surely, 2^2121183407 is an apocalyptic number.

2121183407 is a deficient number, since it is larger than the sum of its proper divisors (303753169).

2121183407 is an equidigital number, since it uses as much as digits as its factorization.

2121183407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90877.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 2121183407 is about 46056.3069188141. The cubic root of 2121183407 is about 1284.8706450257.

Adding to 2121183407 its reverse (7043811212), we get a palindrome (9164994619).

The spelling of 2121183407 in words is "two billion, one hundred twenty-one million, one hundred eighty-three thousand, four hundred seven".