20200112121 has 8 divisors (see below), whose sum is σ = 30781123264. Its totient is φ = 11542921200.

The previous prime is 20200112087. The next prime is 20200112131. The reversal of 20200112121 is 12121100202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20200112121 - 2¹⁷ = 20199981049 is a prime.

It is a super-2 number, since 2×20200112121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200112097 and 20200112106.

It is not an unprimeable number, because it can be changed into a prime (20200112131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480955030 + ... + 480955071.

It is an arithmetic number, because the mean of its divisors is an integer number (3847640408).

Almost surely, 2^20200112121 is an apocalyptic number.

20200112121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20200112121 is a deficient number, since it is larger than the sum of its proper divisors (10581011143).

20200112121 is an equidigital number, since it uses as much as digits as its factorization.

20200112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961910111.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20200112121 its reverse (12121100202), we get a palindrome (32321212323).

The spelling of 20200112121 in words is "twenty billion, two hundred million, one hundred twelve thousand, one hundred twenty-one".