20332211121 has 12 divisors (see below), whose sum is σ = 29659530420. Its totient is φ = 13420600800.

The previous prime is 20332211113. The next prime is 20332211143. The reversal of 20332211121 is 12111223302.

20332211121 is a `hidden beast` number, since 2 + 0 + 332 + 211 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18911750400 + 1420460721 = 137520^2 + 37689^2 .

It is not a de Polignac number, because 20332211121 - 2³ = 20332211113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20332211094 and 20332211103.

It is not an unprimeable number, because it can be changed into a prime (20332211101) 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, 11182926 + ... + 11184743.

It is an arithmetic number, because the mean of its divisors is an integer number (2471627535).

Almost surely, 2^20332211121 is an apocalyptic number.

It is an amenable number.

20332211121 is a deficient number, since it is larger than the sum of its proper divisors (9327319299).

20332211121 is a wasteful number, since it uses less digits than its factorization.

20332211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22367776 (or 22367773 counting only the distinct ones).

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

Adding to 20332211121 its reverse (12111223302), we get a palindrome (32443434423).

The spelling of 20332211121 in words is "twenty billion, three hundred thirty-two million, two hundred eleven thousand, one hundred twenty-one".