21522003122 has 8 divisors (see below), whose sum is σ = 32496799872. Its totient is φ = 10689736500.

The previous prime is 21522003121. The next prime is 21522003193. The reversal of 21522003122 is 22130022512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21522003094 and 21522003103.

It is not an unprimeable number, because it can be changed into a prime (21522003121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35632154 + ... + 35632757.

It is an arithmetic number, because the mean of its divisors is an integer number (4062099984).

Almost surely, 2^21522003122 is an apocalyptic number.

21522003122 is a deficient number, since it is larger than the sum of its proper divisors (10974796750).

21522003122 is a wasteful number, since it uses less digits than its factorization.

21522003122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71265064.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 21522003122 its reverse (22130022512), we get a palindrome (43652025634).

The spelling of 21522003122 in words is "twenty-one billion, five hundred twenty-two million, three thousand, one hundred twenty-two".