21203231201033 has 16 divisors (see below), whose sum is σ = 24824214274944. Its totient is φ = 17730268467840.

The previous prime is 21203231200937. The next prime is 21203231201059. The reversal of 21203231201033 is 33010213230212.

It is a cyclic number.

It is not a de Polignac number, because 21203231201033 - 2¹² = 21203231196937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21203231201533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6474266 + ... + 9182732.

It is an arithmetic number, because the mean of its divisors is an integer number (1551513392184).

Almost surely, 2^{21203231201033} is an apocalyptic number.

It is an amenable number.

21203231201033 is a deficient number, since it is larger than the sum of its proper divisors (3620983073911).

21203231201033 is a wasteful number, since it uses less digits than its factorization.

21203231201033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735792.

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

Adding to 21203231201033 its reverse (33010213230212), we get a palindrome (54213444431245).

The spelling of 21203231201033 in words is "twenty-one trillion, two hundred three billion, two hundred thirty-one million, two hundred one thousand, thirty-three".