21202111033 has 8 divisors (see below), whose sum is σ = 21955380480. Its totient is φ = 20450319120.

The previous prime is 21202111031. The next prime is 21202111037. The reversal of 21202111033 is 33011120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21202111033 - 2¹ = 21202111031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202110998 and 21202111016.

It is not an unprimeable number, because it can be changed into a prime (21202111031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340135 + ... + 397612.

It is an arithmetic number, because the mean of its divisors is an integer number (2744422560).

Almost surely, 2^21202111033 is an apocalyptic number.

It is an amenable number.

21202111033 is a deficient number, since it is larger than the sum of its proper divisors (753269447).

21202111033 is an equidigital number, since it uses as much as digits as its factorization.

21202111033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738767.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21202111033 its reverse (33011120212), we get a palindrome (54213231245).

The spelling of 21202111033 in words is "twenty-one billion, two hundred two million, one hundred eleven thousand, thirty-three".