21175322060 has 48 divisors (see below), whose sum is σ = 47097741600. Its totient is φ = 7969551360.

The previous prime is 21175321969. The next prime is 21175322089. The reversal of 21175322060 is 6022357112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1539815 + ... + 1553505.

It is an arithmetic number, because the mean of its divisors is an integer number (981202950).

Almost surely, 2^21175322060 is an apocalyptic number.

21175322060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21175322060 is an abundant number, since it is smaller than the sum of its proper divisors (25922419540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21175322060 is a wasteful number, since it uses less digits than its factorization.

21175322060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18266 (or 18264 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 21175322060 its reverse (6022357112), we get a palindrome (27197679172).

The spelling of 21175322060 in words is "twenty-one billion, one hundred seventy-five million, three hundred twenty-two thousand, sixty".