21101310103033 has 4 divisors (see below), whose sum is σ = 21592038245008. Its totient is φ = 20610581961060.

The previous prime is 21101310103019. The next prime is 21101310103091. The reversal of 21101310103033 is 33030101310112.

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 21101310103033 - 2¹⁷ = 21101309971961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21101310103033.

It is not an unprimeable number, because it can be changed into a prime (21101310103333) 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, 245364070923 + ... + 245364071008.

It is an arithmetic number, because the mean of its divisors is an integer number (5398009561252).

Almost surely, 2^{21101310103033} is an apocalyptic number.

It is an amenable number.

21101310103033 is a deficient number, since it is larger than the sum of its proper divisors (490728141975).

21101310103033 is an equidigital number, since it uses as much as digits as its factorization.

21101310103033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490728141974.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 21101310103033 its reverse (33030101310112), we get a palindrome (54131411413145).

The spelling of 21101310103033 in words is "twenty-one trillion, one hundred one billion, three hundred ten million, one hundred three thousand, thirty-three".