1121312222020 has 12 divisors (see below), whose sum is σ = 2354755666284. Its totient is φ = 448524888800.

The previous prime is 1121312221987. The next prime is 1121312222021. The reversal of 1121312222020 is 202222131211.

It can be written as a sum of positive squares in 2 ways, for example, as 690999837696 + 430312384324 = 831264^2 + 655982^2 .

It is not an unprimeable number, because it can be changed into a prime (1121312222021) 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 3 ways as a sum of consecutive naturals, for example, 28032805531 + ... + 28032805570.

It is an arithmetic number, because the mean of its divisors is an integer number (196229638857).

Almost surely, 2^{1121312222020} is an apocalyptic number.

1121312222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121312222020 is an abundant number, since it is smaller than the sum of its proper divisors (1233443444264).

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

1121312222020 is a wasteful number, since it uses less digits than its factorization.

1121312222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56065611110 (or 56065611108 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1121312222020 its reverse (202222131211), we get a palindrome (1323534353231).

The spelling of 1121312222020 in words is "one trillion, one hundred twenty-one billion, three hundred twelve million, two hundred twenty-two thousand, twenty".