11220022121 has 32 divisors (see below), whose sum is σ = 14344501248. Its totient is φ = 8521309440.

The previous prime is 11220022111. The next prime is 11220022141. The reversal of 11220022121 is 12122002211.

It is not a de Polignac number, because 11220022121 - 2¹⁴ = 11220005737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220022096 and 11220022105.

It is not an unprimeable number, because it can be changed into a prime (11220022111) 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 31 ways as a sum of consecutive naturals, for example, 1662065 + ... + 1668801.

It is an arithmetic number, because the mean of its divisors is an integer number (448265664).

Almost surely, 2^11220022121 is an apocalyptic number.

11220022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220022121 is a deficient number, since it is larger than the sum of its proper divisors (3124479127).

11220022121 is a wasteful number, since it uses less digits than its factorization.

11220022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301.

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

Adding to 11220022121 its reverse (12122002211), we get a palindrome (23342024332).

The spelling of 11220022121 in words is "eleven billion, two hundred twenty million, twenty-two thousand, one hundred twenty-one".