2125222120 has 48 divisors (see below), whose sum is σ = 5562448740. Its totient is φ = 728646912.

The previous prime is 2125222091. The next prime is 2125222129. The reversal of 2125222120 is 212225212.

It can be written as a sum of positive squares in 2 ways, for example, as 2084287716 + 40934404 = 45654^2 + 6398^2 .

It is not an unprimeable number, because it can be changed into a prime (2125222129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 540189 + ... + 544108.

Almost surely, 2^2125222120 is an apocalyptic number.

2125222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125222120 is an abundant number, since it is smaller than the sum of its proper divisors (3437226620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2125222120 is a wasteful number, since it uses less digits than its factorization.

2125222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084322 (or 1084311 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2125222120 is about 46100.1314531748. The cubic root of 2125222120 is about 1285.6855885188.

Adding to 2125222120 its reverse (212225212), we get a palindrome (2337447332).

The spelling of 2125222120 in words is "two billion, one hundred twenty-five million, two hundred twenty-two thousand, one hundred twenty".