11122001220 has 48 divisors (see below), whose sum is σ = 33972660288. Its totient is φ = 2696242560.

The previous prime is 11122001201. The next prime is 11122001237. The reversal of 11122001220 is 2210022111.

It is a super-2 number, since 2×11122001220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11122001196 and 11122001205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8425099 + ... + 8426418.

It is an arithmetic number, because the mean of its divisors is an integer number (707763756).

Almost surely, 2^11122001220 is an apocalyptic number.

11122001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122001220 is an abundant number, since it is smaller than the sum of its proper divisors (22850659068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11122001220 is a wasteful number, since it uses less digits than its factorization.

11122001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16851540 (or 16851538 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11122001220 its reverse (2210022111), we get a palindrome (13332023331).

The spelling of 11122001220 in words is "eleven billion, one hundred twenty-two million, one thousand, two hundred twenty".