21112201302104 has 64 divisors (see below), whose sum is σ = 44352485487360. Its totient is φ = 9336817607040.

The previous prime is 21112201302091. The next prime is 21112201302139. The reversal of 21112201302104 is 40120310221112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144841949 + ... + 144987635.

It is an arithmetic number, because the mean of its divisors is an integer number (693007585740).

Almost surely, 2^{21112201302104} is an apocalyptic number.

It is an amenable number.

21112201302104 is an abundant number, since it is smaller than the sum of its proper divisors (23240284185256).

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

21112201302104 is a wasteful number, since it uses less digits than its factorization.

21112201302104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190248 (or 190244 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21112201302104 its reverse (40120310221112), we get a palindrome (61232511523216).

The spelling of 21112201302104 in words is "twenty-one trillion, one hundred twelve billion, two hundred one million, three hundred two thousand, one hundred four".