21200110011983 has 12 divisors (see below), whose sum is σ = 24662033777592. Its totient is φ = 18171020846160.

The previous prime is 21200110011959. The next prime is 21200110012069. The reversal of 21200110011983 is 38911001100212.

It is a happy number.

It is not a de Polignac number, because 21200110011983 - 2¹⁶ = 21200109946447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200110011943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4179248 + ... + 7737333.

It is an arithmetic number, because the mean of its divisors is an integer number (2055169481466).

Almost surely, 2^{21200110011983} is an apocalyptic number.

21200110011983 is a deficient number, since it is larger than the sum of its proper divisors (3461923765609).

21200110011983 is a wasteful number, since it uses less digits than its factorization.

21200110011983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952902 (or 11952895 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 21200110011983 in words is "twenty-one trillion, two hundred billion, one hundred ten million, eleven thousand, nine hundred eighty-three".