2121078422 has 8 divisors (see below), whose sum is σ = 3182545200. Its totient is φ = 1060230024.

The previous prime is 2121078419. The next prime is 2121078439. The reversal of 2121078422 is 2248701212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145922 + ... + 159797.

It is an arithmetic number, because the mean of its divisors is an integer number (397818150).

Almost surely, 2^2121078422 is an apocalyptic number.

2121078422 is a deficient number, since it is larger than the sum of its proper divisors (1061466778).

2121078422 is a wasteful number, since it uses less digits than its factorization.

2121078422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309190.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2121078422 is about 46055.1671585285. The cubic root of 2121078422 is about 1284.8494470520.

Adding to 2121078422 its reverse (2248701212), we get a palindrome (4369779634).

The spelling of 2121078422 in words is "two billion, one hundred twenty-one million, seventy-eight thousand, four hundred twenty-two".