22320203121 has 24 divisors (see below), whose sum is σ = 33130364904. Its totient is φ = 14469788160.

The previous prime is 22320203119. The next prime is 22320203149. The reversal of 22320203121 is 12130202322.

22320203121 is a `hidden beast` number, since 22 + 320 + 203 + 121 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1400630625 + 20919572496 = 37425^2 + 144636^2 .

It is not a de Polignac number, because 22320203121 - 2¹ = 22320203119 is a prime.

It is a super-3 number, since 3×22320203121³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22320203094 and 22320203103.

It is not an unprimeable number, because it can be changed into a prime (22320203161) 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, 601705 + ... + 637721.

It is an arithmetic number, because the mean of its divisors is an integer number (1380431871).

Almost surely, 2^22320203121 is an apocalyptic number.

It is an amenable number.

22320203121 is a deficient number, since it is larger than the sum of its proper divisors (10810161783).

22320203121 is a wasteful number, since it uses less digits than its factorization.

22320203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37921 (or 37918 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22320203121 its reverse (12130202322), we get a palindrome (34450405443).

The spelling of 22320203121 in words is "twenty-two billion, three hundred twenty million, two hundred three thousand, one hundred twenty-one".