12020220001220 has 48 divisors (see below), whose sum is σ = 25496385039216. Its totient is φ = 4759736640000.

The previous prime is 12020220001217. The next prime is 12020220001303. The reversal of 12020220001220 is 2210002202021.

It can be written as a sum of positive squares in 8 ways, for example, as 42100473856 + 11978119527364 = 205184^2 + 3460942^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12020220001195 and 12020220001204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12507050 + ... + 13433790.

It is an arithmetic number, because the mean of its divisors is an integer number (531174688317).

Almost surely, 2^{12020220001220} is an apocalyptic number.

12020220001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020220001220 is an abundant number, since it is smaller than the sum of its proper divisors (13476165037996).

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

12020220001220 is a wasteful number, since it uses less digits than its factorization.

12020220001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933272 (or 933270 counting only the distinct ones).

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

Adding to 12020220001220 its reverse (2210002202021), we get a palindrome (14230222203241).

The spelling of 12020220001220 in words is "twelve trillion, twenty billion, two hundred twenty million, one thousand, two hundred twenty".