21101121002112 has 32 divisors (see below), whose sum is σ = 56049852662880. Its totient is φ = 7033707000576.

The previous prime is 21101121002029. The next prime is 21101121002123. The reversal of 21101121002112 is 21120012110112.

It is a happy number.

21101121002112 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 21101121002091 and 21101121002100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27475417588 + ... + 27475418355.

It is an arithmetic number, because the mean of its divisors is an integer number (1751557895715).

Almost surely, 2^{21101121002112} is an apocalyptic number.

It is an amenable number.

21101121002112 is an abundant number, since it is smaller than the sum of its proper divisors (34948731660768).

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

21101121002112 is an equidigital number, since it uses as much as digits as its factorization.

21101121002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54950835960 (or 54950835948 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21101121002112 its reverse (21120012110112), we get a palindrome (42221133112224).

The spelling of 21101121002112 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-one million, two thousand, one hundred twelve".