22001111101220 has 48 divisors (see below), whose sum is σ = 47389639429440. Its totient is φ = 8575267806336.

The previous prime is 22001111101183. The next prime is 22001111101223. The reversal of 22001111101220 is 2210111110022.

It is a junction number, because it is equal to n+sod(n) for n = 22001111101195 and 22001111101204.

It is not an unprimeable number, because it can be changed into a prime (22001111101223) 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, 30167927 + ... + 30888606.

It is an arithmetic number, because the mean of its divisors is an integer number (987284154780).

Almost surely, 2^{22001111101220} is an apocalyptic number.

22001111101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001111101220 is an abundant number, since it is smaller than the sum of its proper divisors (25388528328220).

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

22001111101220 is a wasteful number, since it uses less digits than its factorization.

22001111101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61057004 (or 61057002 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22001111101220 its reverse (2210111110022), we get a palindrome (24211222211242).

The spelling of 22001111101220 in words is "twenty-two trillion, one billion, one hundred eleven million, one hundred one thousand, two hundred twenty".