21002211033 has 8 divisors (see below), whose sum is σ = 28386550368. Its totient is φ = 13809672864.

The previous prime is 21002211023. The next prime is 21002211071. The reversal of 21002211033 is 33011220012.

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

It is not a de Polignac number, because 21002211033 - 2¹⁴ = 21002194649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21002211023) 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 7 ways as a sum of consecutive naturals, for example, 47950035 + ... + 47950472.

It is an arithmetic number, because the mean of its divisors is an integer number (3548318796).

Almost surely, 2^21002211033 is an apocalyptic number.

It is an amenable number.

21002211033 is a deficient number, since it is larger than the sum of its proper divisors (7384339335).

21002211033 is an equidigital number, since it uses as much as digits as its factorization.

21002211033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95900583.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21002211033 its reverse (33011220012), we get a palindrome (54013431045).

The spelling of 21002211033 in words is "twenty-one billion, two million, two hundred eleven thousand, thirty-three".