2122131428 has 12 divisors (see below), whose sum is σ = 3748438512. Its totient is φ = 1051149000.

The previous prime is 2122131421. The next prime is 2122131433. The reversal of 2122131428 is 8241312212.

It is a junction number, because it is equal to n+sod(n) for n = 2122131397 and 2122131406.

It is not an unprimeable number, because it can be changed into a prime (2122131421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2478698 + ... + 2479553.

It is an arithmetic number, because the mean of its divisors is an integer number (312369876).

Almost surely, 2^2122131428 is an apocalyptic number.

It is an amenable number.

2122131428 is a deficient number, since it is larger than the sum of its proper divisors (1626307084).

2122131428 is a wasteful number, since it uses less digits than its factorization.

2122131428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4958362 (or 4958360 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 2122131428 is about 46066.5977471747. The cubic root of 2122131428 is about 1285.0620323630.

The spelling of 2122131428 in words is "two billion, one hundred twenty-two million, one hundred thirty-one thousand, four hundred twenty-eight".