220011122020121 has 16 divisors (see below), whose sum is σ = 230298474232320. Its totient is φ = 209925163935360.

The previous prime is 220011122020103. The next prime is 220011122020127. The reversal of 220011122020121 is 121020221110022.

It is a cyclic number.

It is not a de Polignac number, because 220011122020121 - 2¹⁴ = 220011122003737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220011122020121.

It is not an unprimeable number, because it can be changed into a prime (220011122020127) 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, 10127315 + ... + 23293448.

It is an arithmetic number, because the mean of its divisors is an integer number (14393654639520).

Almost surely, 2^{220011122020121} is an apocalyptic number.

It is an amenable number.

220011122020121 is a deficient number, since it is larger than the sum of its proper divisors (10287352212199).

220011122020121 is a wasteful number, since it uses less digits than its factorization.

220011122020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33423776.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220011122020121 its reverse (121020221110022), we get a palindrome (341031343130143).

The spelling of 220011122020121 in words is "two hundred twenty trillion, eleven billion, one hundred twenty-two million, twenty thousand, one hundred twenty-one".