20221001121 has 8 divisors (see below), whose sum is σ = 26962506720. Its totient is φ = 13480081472.

The previous prime is 20221001111. The next prime is 20221001131. The reversal of 20221001121 is 12110012202.

It is an interprime number because it is at equal distance from previous prime (20221001111) and next prime (20221001131).

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 20221001121 - 2⁷ = 20221000993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20221001097 and 20221001106.

It is not an unprimeable number, because it can be changed into a prime (20221001111) 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, 58395 + ... + 209408.

It is an arithmetic number, because the mean of its divisors is an integer number (3370313340).

Almost surely, 2^20221001121 is an apocalyptic number.

It is an amenable number.

20221001121 is a deficient number, since it is larger than the sum of its proper divisors (6741505599).

20221001121 is a wasteful number, since it uses less digits than its factorization.

20221001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292975.

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

Adding to 20221001121 its reverse (12110012202), we get a palindrome (32331013323).

The spelling of 20221001121 in words is "twenty billion, two hundred twenty-one million, one thousand, one hundred twenty-one".