21522541098 has 8 divisors (see below), whose sum is σ = 43045082208. Its totient is φ = 7174180364.

The previous prime is 21522541097. The next prime is 21522541109. The reversal of 21522541098 is 89014522512.

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

21522541098 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21522541097) 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, 1793545086 + ... + 1793545097.

It is an arithmetic number, because the mean of its divisors is an integer number (5380635276).

Almost surely, 2^21522541098 is an apocalyptic number.

21522541098 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21522541098 is a wasteful number, since it uses less digits than its factorization.

21522541098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587090188.

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 21522541098 in words is "twenty-one billion, five hundred twenty-two million, five hundred forty-one thousand, ninety-eight".