21101200300033 has 24 divisors (see below), whose sum is σ = 24766019350920. Its totient is φ = 17924872734720.

The previous prime is 21101200300021. The next prime is 21101200300051. The reversal of 21101200300033 is 33000300210112.

It can be written as a sum of positive squares in 4 ways, for example, as 4590533357809 + 16510666942224 = 2142553^2 + 4063332^2 .

It is a de Polignac number, because none of the positive numbers 2^k-21101200300033 is a prime.

It is a super-2 number, since 2×21101200300033² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21101200300003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56118373 + ... + 56493133.

It is an arithmetic number, because the mean of its divisors is an integer number (1031917472955).

Almost surely, 2^{21101200300033} is an apocalyptic number.

It is an amenable number.

21101200300033 is a deficient number, since it is larger than the sum of its proper divisors (3664819050887).

21101200300033 is a wasteful number, since it uses less digits than its factorization.

21101200300033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385057 (or 385050 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21101200300033 its reverse (33000300210112), we get a palindrome (54101500510145).

The spelling of 21101200300033 in words is "twenty-one trillion, one hundred one billion, two hundred million, three hundred thousand, thirty-three".