1222020012020 has 24 divisors (see below), whose sum is σ = 2566289146344. Its totient is φ = 488799029376.

The previous prime is 1222020012007. The next prime is 1222020012029. The reversal of 1222020012020 is 202100202221.

It can be written as a sum of positive squares in 4 ways, for example, as 29717622544 + 1192302389476 = 172388^2 + 1091926^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1222020011986 and 1222020012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222020012029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 615674 + ... + 1680206.

It is an arithmetic number, because the mean of its divisors is an integer number (106928714431).

Almost surely, 2^{1222020012020} is an apocalyptic number.

1222020012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222020012020 is an abundant number, since it is smaller than the sum of its proper divisors (1344269134324).

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

1222020012020 is a wasteful number, since it uses less digits than its factorization.

1222020012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121939 (or 1121937 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1222020012020 its reverse (202100202221), we get a palindrome (1424120214241).

The spelling of 1222020012020 in words is "one trillion, two hundred twenty-two billion, twenty million, twelve thousand, twenty".