20122122202121 has 8 divisors (see below), whose sum is σ = 20374523510784. Its totient is φ = 19871293487760.

The previous prime is 20122122202109. The next prime is 20122122202129. The reversal of 20122122202121 is 12120222122102.

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 20122122202121 - 2³⁰ = 20121048460297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122122202093 and 20122122202102.

It is not an unprimeable number, because it can be changed into a prime (20122122202129) 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 7 ways as a sum of consecutive naturals, for example, 393122825 + ... + 393174006.

It is an arithmetic number, because the mean of its divisors is an integer number (2546815438848).

Almost surely, 2^{20122122202121} is an apocalyptic number.

It is an amenable number.

20122122202121 is a deficient number, since it is larger than the sum of its proper divisors (252401308663).

20122122202121 is a wasteful number, since it uses less digits than its factorization.

20122122202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786297151.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20122122202121 its reverse (12120222122102), we get a palindrome (32242344324223).

The spelling of 20122122202121 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred two thousand, one hundred twenty-one".