1222222021120 has 40 divisors (see below), whose sum is σ = 2930468273964. Its totient is φ = 488888807424.

The previous prime is 1222222021117. The next prime is 1222222021123. The reversal of 1222222021120 is 211202222221.

It is an interprime number because it is at equal distance from previous prime (1222222021117) and next prime (1222222021123).

It can be written as a sum of positive squares in 2 ways, for example, as 1149218304256 + 73003716864 = 1072016^2 + 270192^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1222222021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238712679 + ... + 238717798.

Almost surely, 2^{1222222021120} is an apocalyptic number.

1222222021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222222021120 is an abundant number, since it is smaller than the sum of its proper divisors (1708246252844).

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

1222222021120 is an frugal number, since it uses more digits than its factorization.

1222222021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477430500 (or 477430484 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1222222021120 its reverse (211202222221), we get a palindrome (1433424243341).

The spelling of 1222222021120 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty".