21012501096 has 48 divisors (see below), whose sum is σ = 58744632960. Its totient is φ = 6778225440.

The previous prime is 21012501089. The next prime is 21012501119. The reversal of 21012501096 is 69010521012.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4704870 + ... + 4709333.

It is an arithmetic number, because the mean of its divisors is an integer number (1223846520).

Almost surely, 2^21012501096 is an apocalyptic number.

It is an amenable number.

21012501096 is an abundant number, since it is smaller than the sum of its proper divisors (37732131864).

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

21012501096 is a wasteful number, since it uses less digits than its factorization.

21012501096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9414246 (or 9414239 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 21012501096 in words is "twenty-one billion, twelve million, five hundred one thousand, ninety-six".