21202211033 has 4 divisors (see below), whose sum is σ = 21202587648. Its totient is φ = 21201834420.

The previous prime is 21202210993. The next prime is 21202211053. The reversal of 21202211033 is 33011220212.

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 21202211033 - 2¹⁴ = 21202194649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202211053) 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, 84953 + ... + 222758.

It is an arithmetic number, because the mean of its divisors is an integer number (5300646912).

Almost surely, 2^21202211033 is an apocalyptic number.

It is an amenable number.

21202211033 is a deficient number, since it is larger than the sum of its proper divisors (376615).

21202211033 is an equidigital number, since it uses as much as digits as its factorization.

21202211033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376614.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21202211033 its reverse (33011220212), we get a palindrome (54213431245).

The spelling of 21202211033 in words is "twenty-one billion, two hundred two million, two hundred eleven thousand, thirty-three".