20223102121 has 4 divisors (see below), whose sum is σ = 20920450500. Its totient is φ = 19525753744.

The previous prime is 20223102089. The next prime is 20223102191. The reversal of 20223102121 is 12120132202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16518675625 + 3704426496 = 128525^2 + 60864^2 .

It is a cyclic number.

It is not a de Polignac number, because 20223102121 - 2⁵ = 20223102089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20223102095 and 20223102104.

It is not an unprimeable number, because it can be changed into a prime (20223102191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348674146 + ... + 348674203.

It is an arithmetic number, because the mean of its divisors is an integer number (5230112625).

Almost surely, 2^20223102121 is an apocalyptic number.

It is an amenable number.

20223102121 is a deficient number, since it is larger than the sum of its proper divisors (697348379).

20223102121 is an equidigital number, since it uses as much as digits as its factorization.

20223102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697348378.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20223102121 its reverse (12120132202), we get a palindrome (32343234323).

The spelling of 20223102121 in words is "twenty billion, two hundred twenty-three million, one hundred two thousand, one hundred twenty-one".