21212002110999 has 8 divisors (see below), whose sum is σ = 32323050835840. Its totient is φ = 12121144063416.

The previous prime is 21212002110983. The next prime is 21212002111007. The reversal of 21212002110999 is 99901120021212.

It is a happy number.

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

It is not a de Polignac number, because 21212002110999 - 2⁴ = 21212002110983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212002110979) 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, 505047669289 + ... + 505047669330.

It is an arithmetic number, because the mean of its divisors is an integer number (4040381354480).

Almost surely, 2^{21212002110999} is an apocalyptic number.

21212002110999 is a deficient number, since it is larger than the sum of its proper divisors (11111048724841).

21212002110999 is a wasteful number, since it uses less digits than its factorization.

21212002110999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010095338629.

The product of its (nonzero) digits is 11664, while the sum is 39.

The spelling of 21212002110999 in words is "twenty-one trillion, two hundred twelve billion, two million, one hundred ten thousand, nine hundred ninety-nine".