2122120042125 has 32 divisors (see below), whose sum is σ = 3534063177216. Its totient is φ = 1130882155200.

The previous prime is 2122120042123. The next prime is 2122120042139. The reversal of 2122120042125 is 5212400212212.

It is a happy number.

It is not a de Polignac number, because 2122120042125 - 2¹ = 2122120042123 is a prime.

It is a super-2 number, since 2×2122120042125² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2122120042095 and 2122120042104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122120042123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1823509 + ... + 2751258.

It is an arithmetic number, because the mean of its divisors is an integer number (110439474288).

Almost surely, 2^{2122120042125} is an apocalyptic number.

2122120042125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2122120042125 is a deficient number, since it is larger than the sum of its proper divisors (1411943135091).

2122120042125 is a wasteful number, since it uses less digits than its factorization.

2122120042125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576022 (or 4576012 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 2122120042125 its reverse (5212400212212), we get a palindrome (7334520254337).

The spelling of 2122120042125 in words is "two trillion, one hundred twenty-two billion, one hundred twenty million, forty-two thousand, one hundred twenty-five".