20022002022121 has 16 divisors (see below), whose sum is σ = 21911724562176. Its totient is φ = 18143887410000.

The previous prime is 20022002022097. The next prime is 20022002022131. The reversal of 20022002022121 is 12122020022002.

It is not a de Polignac number, because 20022002022121 - 2⁵ = 20022002022089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022002022095 and 20022002022104.

It is not an unprimeable number, because it can be changed into a prime (20022002022131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22171566 + ... + 23056936.

It is an arithmetic number, because the mean of its divisors is an integer number (1369482785136).

Almost surely, 2^{20022002022121} is an apocalyptic number.

It is an amenable number.

20022002022121 is a deficient number, since it is larger than the sum of its proper divisors (1889722540055).

20022002022121 is a wasteful number, since it uses less digits than its factorization.

20022002022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891924.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20022002022121 its reverse (12122020022002), we get a palindrome (32144022044123).

The spelling of 20022002022121 in words is "twenty trillion, twenty-two billion, two million, twenty-two thousand, one hundred twenty-one".