1022211112220 has 48 divisors (see below), whose sum is σ = 2150975953728. Its totient is φ = 408059520000.

The previous prime is 1022211112199. The next prime is 1022211112297. The reversal of 1022211112220 is 222111122201.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 74330345 + ... + 74344095.

It is an arithmetic number, because the mean of its divisors is an integer number (44811999036).

Almost surely, 2^{1022211112220} is an apocalyptic number.

1022211112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022211112220 is an abundant number, since it is smaller than the sum of its proper divisors (1128764841508).

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

1022211112220 is a wasteful number, since it uses less digits than its factorization.

1022211112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20990 (or 20988 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1022211112220 its reverse (222111122201), we get a palindrome (1244322234421).

The spelling of 1022211112220 in words is "one trillion, twenty-two billion, two hundred eleven million, one hundred twelve thousand, two hundred twenty".