21002011433033 has 16 divisors (see below), whose sum is σ = 22330734531840. Its totient is φ = 19707992276544.

The previous prime is 21002011433027. The next prime is 21002011433107. The reversal of 21002011433033 is 33033411020012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002011433033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002011433023) 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, 12249860 + ... + 13858682.

It is an arithmetic number, because the mean of its divisors is an integer number (1395670908240).

Almost surely, 2^{21002011433033} is an apocalyptic number.

21002011433033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21002011433033 is a deficient number, since it is larger than the sum of its proper divisors (1328723098807).

21002011433033 is a wasteful number, since it uses less digits than its factorization.

21002011433033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619608.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21002011433033 its reverse (33033411020012), we get a palindrome (54035422453045).

The spelling of 21002011433033 in words is "twenty-one trillion, two billion, eleven million, four hundred thirty-three thousand, thirty-three".