21112021122099 has 8 divisors (see below), whose sum is σ = 28152590039040. Its totient is φ = 14073066476616.

The previous prime is 21112021122053. The next prime is 21112021122119. The reversal of 21112021122099 is 99022112021112.

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

It is not a de Polignac number, because 21112021122099 - 2⁸ = 21112021121843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112021123099) 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, 403537347 + ... + 403589660.

It is an arithmetic number, because the mean of its divisors is an integer number (3519073754880).

Almost surely, 2^{21112021122099} is an apocalyptic number.

21112021122099 is a deficient number, since it is larger than the sum of its proper divisors (7040568916941).

21112021122099 is an equidigital number, since it uses as much as digits as its factorization.

21112021122099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807135729.

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 21112021122099 in words is "twenty-one trillion, one hundred twelve billion, twenty-one million, one hundred twenty-two thousand, ninety-nine".