21221012000099 has 8 divisors (see below), whose sum is σ = 21751622652480. Its totient is φ = 20691021585600.

The previous prime is 21221012000059. The next prime is 21221012000119. The reversal of 21221012000099 is 99000021012212.

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

It is a cyclic number.

It is not a de Polignac number, because 21221012000099 - 2¹² = 21221011996003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21221012000029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154990187 + ... + 155127044.

It is an arithmetic number, because the mean of its divisors is an integer number (2718952831560).

Almost surely, 2^{21221012000099} is an apocalyptic number.

21221012000099 is a deficient number, since it is larger than the sum of its proper divisors (530610652381).

21221012000099 is a wasteful number, since it uses less digits than its factorization.

21221012000099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310118941.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 21221012000099 in words is "twenty-one trillion, two hundred twenty-one billion, twelve million, ninety-nine", and thus it is an aban number.