20220112122121 has 8 divisors (see below), whose sum is σ = 20297979176904. Its totient is φ = 20142371579520.

The previous prime is 20220112122071. The next prime is 20220112122127. The reversal of 20220112122121 is 12122121102202.

It can be written as a sum of positive squares in 4 ways, for example, as 4975304230521 + 15244807891600 = 2230539^2 + 3904460^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20220112122121 - 2⁹ = 20220112121609 is a prime.

It is a super-2 number, since 2×20220112122121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20220112122127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31307770 + ... + 31947091.

It is an arithmetic number, because the mean of its divisors is an integer number (2537247397113).

Almost surely, 2^{20220112122121} is an apocalyptic number.

It is an amenable number.

20220112122121 is a deficient number, since it is larger than the sum of its proper divisors (77867054783).

20220112122121 is an equidigital number, since it uses as much as digits as its factorization.

20220112122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63256091.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20220112122121 its reverse (12122121102202), we get a palindrome (32342233224323).

The spelling of 20220112122121 in words is "twenty trillion, two hundred twenty billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twenty-one".