21120022112099 has 8 divisors (see below), whose sum is σ = 21638205466080. Its totient is φ = 20601984513600.

The previous prime is 21120022112089. The next prime is 21120022112129. The reversal of 21120022112099 is 99021122002112.

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 21120022112099 - 2⁸ = 21120022111843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21120022112069) 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, 36145487 + ... + 36725144.

It is an arithmetic number, because the mean of its divisors is an integer number (2704775683260).

Almost surely, 2^{21120022112099} is an apocalyptic number.

21120022112099 is a deficient number, since it is larger than the sum of its proper divisors (518183353981).

21120022112099 is an equidigital number, since it uses as much as digits as its factorization.

21120022112099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72877741.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 21120022112099 in words is "twenty-one trillion, one hundred twenty billion, twenty-two million, one hundred twelve thousand, ninety-nine".