21050200983 has 8 divisors (see below), whose sum is σ = 32076496768. Its totient is φ = 12028686264.

The previous prime is 21050200973. The next prime is 21050200991. The reversal of 21050200983 is 38900205012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21050200983 - 2⁹ = 21050200471 is a prime.

It is a super-2 number, since 2×21050200983² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21050200983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21050200973) 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, 501195241 + ... + 501195282.

It is an arithmetic number, because the mean of its divisors is an integer number (4009562096).

Almost surely, 2^21050200983 is an apocalyptic number.

21050200983 is a deficient number, since it is larger than the sum of its proper divisors (11026295785).

21050200983 is a wasteful number, since it uses less digits than its factorization.

21050200983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002390533.

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 21050200983 its reverse (38900205012), we get a palindrome (59950405995).

The spelling of 21050200983 in words is "twenty-one billion, fifty million, two hundred thousand, nine hundred eighty-three".