20133211 has 12 divisors (see below), whose sum is σ = 24057712. Its totient is φ = 16503696.

The previous prime is 20133199. The next prime is 20133247. The reversal of 20133211 is 11233102.

It is not a de Polignac number, because 20133211 - 2¹³ = 20125019 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20133191 and 20133200.

It is not an unprimeable number, because it can be changed into a prime (20133251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 985 + ... + 6421.

Almost surely, 2^20133211 is an apocalyptic number.

20133211 is a deficient number, since it is larger than the sum of its proper divisors (3924501).

20133211 is an equidigital number, since it uses as much as digits as its factorization.

20133211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5490 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 20133211 is about 4487.0046801848. The cubic root of 20133211 is about 272.0430790693.

Adding to 20133211 its reverse (11233102), we get a palindrome (31366313).

The spelling of 20133211 in words is "twenty million, one hundred thirty-three thousand, two hundred eleven".