11112122001220 has 24 divisors (see below), whose sum is σ = 24563638108800. Its totient is φ = 4210909389792.

The previous prime is 11112122001107. The next prime is 11112122001221. The reversal of 11112122001220 is 2210022121111.

It is a junction number, because it is equal to n+sod(n) for n = 11112122001194 and 11112122001203.

It is not an unprimeable number, because it can be changed into a prime (11112122001221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14621212780 + ... + 14621213539.

It is an arithmetic number, because the mean of its divisors is an integer number (1023484921200).

Almost surely, 2^{11112122001220} is an apocalyptic number.

11112122001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112122001220 is an abundant number, since it is smaller than the sum of its proper divisors (13451516107580).

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

11112122001220 is a wasteful number, since it uses less digits than its factorization.

11112122001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29242426347 (or 29242426345 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11112122001220 its reverse (2210022121111), we get a palindrome (13322144122331).

The spelling of 11112122001220 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-two million, one thousand, two hundred twenty".