220011202121 has 16 divisors (see below), whose sum is σ = 229738965120. Its totient is φ = 210494993280.

The previous prime is 220011202111. The next prime is 220011202139. The reversal of 220011202121 is 121202110022.

It is a cyclic number.

It is not a de Polignac number, because 220011202121 - 2⁶ = 220011202057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220011202096 and 220011202105.

It is not an unprimeable number, because it can be changed into a prime (220011202111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4764140 + ... + 4810098.

It is an arithmetic number, because the mean of its divisors is an integer number (14358685320).

Almost surely, 2^220011202121 is an apocalyptic number.

It is an amenable number.

220011202121 is a deficient number, since it is larger than the sum of its proper divisors (9727762999).

220011202121 is a wasteful number, since it uses less digits than its factorization.

220011202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48256.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220011202121 its reverse (121202110022), we get a palindrome (341213312143).

The spelling of 220011202121 in words is "two hundred twenty billion, eleven million, two hundred two thousand, one hundred twenty-one".