2121142425 has 48 divisors (see below), whose sum is σ = 3697709760. Its totient is φ = 1069943040.

The previous prime is 2121142423. The next prime is 2121142483. The reversal of 2121142425 is 5242411212.

It is not a de Polignac number, because 2121142425 - 2¹ = 2121142423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121142395 and 2121142404.

It is not an unprimeable number, because it can be changed into a prime (2121142423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1419979 + ... + 1421471.

It is an arithmetic number, because the mean of its divisors is an integer number (77035620).

Almost surely, 2^2121142425 is an apocalyptic number.

2121142425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2121142425 is a deficient number, since it is larger than the sum of its proper divisors (1576567335).

2121142425 is a wasteful number, since it uses less digits than its factorization.

2121142425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522 (or 2517 counting only the distinct ones).

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

The square root of 2121142425 is about 46055.8620047438. The cubic root of 2121142425 is about 1284.8623702567.

Adding to 2121142425 its reverse (5242411212), we get a palindrome (7363553637).

It can be divided in two parts, 21211 and 42425, that added together give a palindrome (63636).

The spelling of 2121142425 in words is "two billion, one hundred twenty-one million, one hundred forty-two thousand, four hundred twenty-five".