220203121311 has 24 divisors (see below), whose sum is σ = 336802016304. Its totient is φ = 138158142720.

The previous prime is 220203121241. The next prime is 220203121321. The reversal of 220203121311 is 113121302022.

220203121311 is a `hidden beast` number, since 2 + 20 + 20 + 312 + 1 + 311 = 666.

It is not a de Polignac number, because 220203121311 - 2⁹ = 220203120799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220203121321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3232381 + ... + 3299801.

It is an arithmetic number, because the mean of its divisors is an integer number (14033417346).

Almost surely, 2^220203121311 is an apocalyptic number.

220203121311 is a deficient number, since it is larger than the sum of its proper divisors (116598894993).

220203121311 is a wasteful number, since it uses less digits than its factorization.

220203121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88791 (or 88788 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 220203121311 its reverse (113121302022), we get a palindrome (333324423333).

The spelling of 220203121311 in words is "two hundred twenty billion, two hundred three million, one hundred twenty-one thousand, three hundred eleven".