21002111033233 has 16 divisors (see below), whose sum is σ = 24630389821440. Its totient is φ = 17703092667600.

The previous prime is 21002111033231. The next prime is 21002111033251. The reversal of 21002111033233 is 33233011120012.

It is a cyclic number.

It is not a de Polignac number, because 21002111033233 - 2¹ = 21002111033231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002111033231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069017513 + ... + 1069037158.

It is an arithmetic number, because the mean of its divisors is an integer number (1539399363840).

Almost surely, 2^{21002111033233} is an apocalyptic number.

It is an amenable number.

21002111033233 is a deficient number, since it is larger than the sum of its proper divisors (3628278788207).

21002111033233 is a wasteful number, since it uses less digits than its factorization.

21002111033233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138054748.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21002111033233 its reverse (33233011120012), we get a palindrome (54235122153245).

The spelling of 21002111033233 in words is "twenty-one trillion, two billion, one hundred eleven million, thirty-three thousand, two hundred thirty-three".