21201444001098 has 24 divisors (see below), whose sum is σ = 48354170529600. Its totient is φ = 6695192842344.

The previous prime is 21201444001063. The next prime is 21201444001099. The reversal of 21201444001098 is 89010044410212.

21201444001098 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 144 + 400 + 109 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (21201444001099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30996262818 + ... + 30996263501.

It is an arithmetic number, because the mean of its divisors is an integer number (2014757105400).

Almost surely, 2^{21201444001098} is an apocalyptic number.

21201444001098 is an abundant number, since it is smaller than the sum of its proper divisors (27152726528502).

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

21201444001098 is a wasteful number, since it uses less digits than its factorization.

21201444001098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61992526346 (or 61992526343 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 21201444001098 in words is "twenty-one trillion, two hundred one billion, four hundred forty-four million, one thousand, ninety-eight".