20020022121121 has 32 divisors (see below), whose sum is σ = 22365648654336. Its totient is φ = 17767093176000.

The previous prime is 20020022121061. The next prime is 20020022121149. The reversal of 20020022121121 is 12112122002002.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020022121121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020022121095 and 20020022121104.

It is not an unprimeable number, because it can be changed into a prime (20020022161121) 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 31 ways as a sum of consecutive naturals, for example, 910362436 + ... + 910384426.

It is an arithmetic number, because the mean of its divisors is an integer number (698926520448).

Almost surely, 2^{20020022121121} is an apocalyptic number.

It is an amenable number.

20020022121121 is a deficient number, since it is larger than the sum of its proper divisors (2345626533215).

20020022121121 is a wasteful number, since it uses less digits than its factorization.

20020022121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33493.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20020022121121 its reverse (12112122002002), we get a palindrome (32132144123123).

The spelling of 20020022121121 in words is "twenty trillion, twenty billion, twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".