20211120112121 has 8 divisors (see below), whose sum is σ = 20500118179200. Its totient is φ = 19922242445280.

The previous prime is 20211120112087. The next prime is 20211120112159. The reversal of 20211120112121 is 12121102111202.

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 20211120112121 - 2¹⁴ = 20211120095737 is a prime.

It is a super-2 number, since 2×20211120112121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211120112121.

It is not an unprimeable number, because it can be changed into a prime (20211120132121) 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, 29761901 + ... + 30433418.

It is an arithmetic number, because the mean of its divisors is an integer number (2562514772400).

Almost surely, 2^{20211120112121} is an apocalyptic number.

It is an amenable number.

20211120112121 is a deficient number, since it is larger than the sum of its proper divisors (288998067079).

20211120112121 is an equidigital number, since it uses as much as digits as its factorization.

20211120112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60200119.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20211120112121 its reverse (12121102111202), we get a palindrome (32332222223323).

The spelling of 20211120112121 in words is "twenty trillion, two hundred eleven billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty-one".