21211233033 has 8 divisors (see below), whose sum is σ = 28328704096. Its totient is φ = 14117292000.

The previous prime is 21211233023. The next prime is 21211233037. The reversal of 21211233033 is 33033211212.

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

It is not a de Polignac number, because 21211233033 - 2⁶ = 21211232969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211233037) 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, 5880403 + ... + 5884008.

It is an arithmetic number, because the mean of its divisors is an integer number (3541088012).

Almost surely, 2^21211233033 is an apocalyptic number.

It is an amenable number.

21211233033 is a deficient number, since it is larger than the sum of its proper divisors (7117471063).

21211233033 is a wasteful number, since it uses less digits than its factorization.

21211233033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11765015.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21211233033 its reverse (33033211212), we get a palindrome (54244444245).

The spelling of 21211233033 in words is "twenty-one billion, two hundred eleven million, two hundred thirty-three thousand, thirty-three".