20032231211 has 4 divisors (see below), whose sum is σ = 20034323400. Its totient is φ = 20030139024.

The previous prime is 20032231207. The next prime is 20032231229. The reversal of 20032231211 is 11213223002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11213223002 = 2 ⋅5606611501.

It is a cyclic number.

It is not a de Polignac number, because 20032231211 - 2² = 20032231207 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 20032231211.

It is not an unprimeable number, because it can be changed into a prime (20032231201) 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, 1031666 + ... + 1050903.

It is an arithmetic number, because the mean of its divisors is an integer number (5008580850).

Almost surely, 2^20032231211 is an apocalyptic number.

20032231211 is a deficient number, since it is larger than the sum of its proper divisors (2092189).

20032231211 is an equidigital number, since it uses as much as digits as its factorization.

20032231211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092188.

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

Adding to 20032231211 its reverse (11213223002), we get a palindrome (31245454213).

The spelling of 20032231211 in words is "twenty billion, thirty-two million, two hundred thirty-one thousand, two hundred eleven".