21522125276 has 12 divisors (see below), whose sum is σ = 37664953872. Its totient is φ = 10760709888.

The previous prime is 21522125237. The next prime is 21522125291. The reversal of 21522125276 is 67252122512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88361 + ... + 225503.

It is an arithmetic number, because the mean of its divisors is an integer number (3138746156).

Almost surely, 2^21522125276 is an apocalyptic number.

It is an amenable number.

21522125276 is a deficient number, since it is larger than the sum of its proper divisors (16142828596).

21522125276 is a wasteful number, since it uses less digits than its factorization.

21522125276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176380 (or 176378 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

Adding to 21522125276 its reverse (67252122512), we get a palindrome (88774247788).

The spelling of 21522125276 in words is "twenty-one billion, five hundred twenty-two million, one hundred twenty-five thousand, two hundred seventy-six".