21275101248 has 56 divisors (see below), whose sum is σ = 59601579552. Its totient is φ = 6674540544.

The previous prime is 21275101217. The next prime is 21275101301. The reversal of 21275101248 is 84210157212.

It is a super-2 number, since 2×21275101248² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3255790 + ... + 3262317.

Almost surely, 2^21275101248 is an apocalyptic number.

It is an amenable number.

21275101248 is an abundant number, since it is smaller than the sum of its proper divisors (38326478304).

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

21275101248 is a wasteful number, since it uses less digits than its factorization.

21275101248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6518139 (or 6518129 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The spelling of 21275101248 in words is "twenty-one billion, two hundred seventy-five million, one hundred one thousand, two hundred forty-eight".