20020222210121 has 16 divisors (see below), whose sum is σ = 23079770609280. Its totient is φ = 17010906318720.

The previous prime is 20020222210117. The next prime is 20020222210123. The reversal of 20020222210121 is 12101222202002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20020222210121 - 2² = 20020222210117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20020222210121.

It is not an unprimeable number, because it can be changed into a prime (20020222210123) 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, 14042315 + ... + 15402176.

It is an arithmetic number, because the mean of its divisors is an integer number (1442485663080).

Almost surely, 2^{20020222210121} is an apocalyptic number.

It is an amenable number.

20020222210121 is a deficient number, since it is larger than the sum of its proper divisors (3059548399159).

20020222210121 is a wasteful number, since it uses less digits than its factorization.

20020222210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29445344.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20020222210121 its reverse (12101222202002), we get a palindrome (32121444412123).

The spelling of 20020222210121 in words is "twenty trillion, twenty billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".