20310202211 has 16 divisors (see below), whose sum is σ = 22100607648. Its totient is φ = 18552576000.

The previous prime is 20310202207. The next prime is 20310202273. The reversal of 20310202211 is 11220201302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20310202211 - 2² = 20310202207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310202811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4116416 + ... + 4121346.

It is an arithmetic number, because the mean of its divisors is an integer number (1381287978).

Almost surely, 2^20310202211 is an apocalyptic number.

20310202211 is a deficient number, since it is larger than the sum of its proper divisors (1790405437).

20310202211 is a wasteful number, since it uses less digits than its factorization.

20310202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20310202211 its reverse (11220201302), we get a palindrome (31530403513).

Subtracting from 20310202211 its reverse (11220201302), we obtain a palindrome (9090000909).

The spelling of 20310202211 in words is "twenty billion, three hundred ten million, two hundred two thousand, two hundred eleven".