21310201033 has 4 divisors (see below), whose sum is σ = 23247492048. Its totient is φ = 19372910020.

The previous prime is 21310201021. The next prime is 21310201037. The reversal of 21310201033 is 33010201312.

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 21310201033 - 2²¹ = 21308103881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21310200998 and 21310201016.

It is not an unprimeable number, because it can be changed into a prime (21310201037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968645491 + ... + 968645512.

It is an arithmetic number, because the mean of its divisors is an integer number (5811873012).

Almost surely, 2^21310201033 is an apocalyptic number.

It is an amenable number.

21310201033 is a deficient number, since it is larger than the sum of its proper divisors (1937291015).

21310201033 is a wasteful number, since it uses less digits than its factorization.

21310201033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937291014.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21310201033 its reverse (33010201312), we get a palindrome (54320402345).

The spelling of 21310201033 in words is "twenty-one billion, three hundred ten million, two hundred one thousand, thirty-three".