20200231121 has 16 divisors (see below), whose sum is σ = 24574089600. Its totient is φ = 16218880128.

The previous prime is 20200231099. The next prime is 20200231151. The reversal of 20200231121 is 12113200202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20200231121 - 2¹⁴ = 20200214737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200231096 and 20200231105.

It is not an unprimeable number, because it can be changed into a prime (20200231151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841430 + ... + 865103.

It is an arithmetic number, because the mean of its divisors is an integer number (1535880600).

Almost surely, 2^20200231121 is an apocalyptic number.

It is an amenable number.

20200231121 is a deficient number, since it is larger than the sum of its proper divisors (4373858479).

20200231121 is a wasteful number, since it uses less digits than its factorization.

20200231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706648.

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

Adding to 20200231121 its reverse (12113200202), we get a palindrome (32313431323).

The spelling of 20200231121 in words is "twenty billion, two hundred million, two hundred thirty-one thousand, one hundred twenty-one".