11222021221220 has 24 divisors (see below), whose sum is σ = 24590863894464. Its totient is φ = 4293642901856.

The previous prime is 11222021221153. The next prime is 11222021221259. The reversal of 11222021221220 is 2212212022211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11222021221192 and 11222021221201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12197848694 + ... + 12197849613.

It is an arithmetic number, because the mean of its divisors is an integer number (1024619328936).

Almost surely, 2^{11222021221220} is an apocalyptic number.

11222021221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222021221220 is an abundant number, since it is smaller than the sum of its proper divisors (13368842673244).

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

11222021221220 is a wasteful number, since it uses less digits than its factorization.

11222021221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24395698339 (or 24395698337 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11222021221220 its reverse (2212212022211), we get a palindrome (13434233243431).

The spelling of 11222021221220 in words is "eleven trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty".