2502134221 has 4 divisors (see below), whose sum is σ = 2502308412. Its totient is φ = 2501960032.

The previous prime is 2502134209. The next prime is 2502134249. The reversal of 2502134221 is 1224312052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2216997225 + 285136996 = 47085^2 + 16886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2502134221 - 2⁹ = 2502133709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2502134192 and 2502134201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2502134251) 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, 63400 + ... + 94993.

It is an arithmetic number, because the mean of its divisors is an integer number (625577103).

Almost surely, 2^2502134221 is an apocalyptic number.

It is an amenable number.

2502134221 is a deficient number, since it is larger than the sum of its proper divisors (174191).

2502134221 is a wasteful number, since it uses less digits than its factorization.

2502134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174190.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2502134221 is about 50021.3376570439. The cubic root of 2502134221 is about 1357.5949095869.

Adding to 2502134221 its reverse (1224312052), we get a palindrome (3726446273).

The spelling of 2502134221 in words is "two billion, five hundred two million, one hundred thirty-four thousand, two hundred twenty-one".