21001100222033 has 4 divisors (see below), whose sum is σ = 21011399929920. Its totient is φ = 20990800514148.

The previous prime is 21001100222029. The next prime is 21001100222077. The reversal of 21001100222033 is 33022200110012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21001100222033 - 2² = 21001100222029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21001100222233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5149850885 + ... + 5149854962.

It is an arithmetic number, because the mean of its divisors is an integer number (5252849982480).

Almost surely, 2^{21001100222033} is an apocalyptic number.

It is an amenable number.

21001100222033 is a deficient number, since it is larger than the sum of its proper divisors (10299707887).

21001100222033 is a wasteful number, since it uses less digits than its factorization.

21001100222033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10299707886.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21001100222033 its reverse (33022200110012), we get a palindrome (54023300332045).

The spelling of 21001100222033 in words is "twenty-one trillion, one billion, one hundred million, two hundred twenty-two thousand, thirty-three".