20220002112121 has 12 divisors (see below), whose sum is σ = 23906820834660. Its totient is φ = 17047308569760.

The previous prime is 20220002112113. The next prime is 20220002112151. The reversal of 20220002112121 is 12121120002202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1405540658025 + 18814461454096 = 1185555^2 + 4337564^2 .

It is not a de Polignac number, because 20220002112121 - 2³ = 20220002112113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220002112095 and 20220002112104.

It is not an unprimeable number, because it can be changed into a prime (20220002112151) 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, 3382399506 + ... + 3382405483.

It is an arithmetic number, because the mean of its divisors is an integer number (1992235069555).

Almost surely, 2^{20220002112121} is an apocalyptic number.

It is an amenable number.

20220002112121 is a deficient number, since it is larger than the sum of its proper divisors (3686818722539).

20220002112121 is an equidigital number, since it uses as much as digits as its factorization.

20220002112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764805064 (or 6764805057 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20220002112121 its reverse (12121120002202), we get a palindrome (32341122114323).

The spelling of 20220002112121 in words is "twenty trillion, two hundred twenty billion, two million, one hundred twelve thousand, one hundred twenty-one".