20022022121 has 8 divisors (see below), whose sum is σ = 20639611080. Its totient is φ = 19408457088.

The previous prime is 20022022109. The next prime is 20022022127. The reversal of 20022022121 is 12122022002.

It can be written as a sum of positive squares in 4 ways, for example, as 7299310096 + 12722712025 = 85436^2 + 112795^2 .

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 20022022121 - 2³⁰ = 18948280297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022022096 and 20022022105.

It is not an unprimeable number, because it can be changed into a prime (20022022127) 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, 995876 + ... + 1015781.

It is an arithmetic number, because the mean of its divisors is an integer number (2579951385).

Almost surely, 2^20022022121 is an apocalyptic number.

It is an amenable number.

20022022121 is a deficient number, since it is larger than the sum of its proper divisors (617588959).

20022022121 is a wasteful number, since it uses less digits than its factorization.

20022022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011963.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20022022121 its reverse (12122022002), we get a palindrome (32144044123).

The spelling of 20022022121 in words is "twenty billion, twenty-two million, twenty-two thousand, one hundred twenty-one".