1220212212020 has 12 divisors (see below), whose sum is σ = 2562445645284. Its totient is φ = 488084884800.

The previous prime is 1220212212019. The next prime is 1220212212047. The reversal of 1220212212020 is 202122120221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 243360675856 + 976851536164 = 493316^2 + 988358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220212212020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30505305281 + ... + 30505305320.

It is an arithmetic number, because the mean of its divisors is an integer number (213537137107).

Almost surely, 2^{1220212212020} is an apocalyptic number.

1220212212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220212212020 is an abundant number, since it is smaller than the sum of its proper divisors (1342233433264).

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

1220212212020 is a wasteful number, since it uses less digits than its factorization.

1220212212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61010610610 (or 61010610608 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1220212212020 its reverse (202122120221), we get a palindrome (1422334332241).

The spelling of 1220212212020 in words is "one trillion, two hundred twenty billion, two hundred twelve million, two hundred twelve thousand, twenty".