1312222020020 has 24 divisors (see below), whose sum is σ = 2756061499464. Its totient is φ = 524813520896.

The previous prime is 1312222020007. The next prime is 1312222020113. The reversal of 1312222020020 is 200202222131.

It can be written as a sum of positive squares in 4 ways, for example, as 94831970704 + 1217390049316 = 307948^2 + 1103354^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4562417 + ... + 4841496.

It is an arithmetic number, because the mean of its divisors is an integer number (114835895811).

Almost surely, 2^{1312222020020} is an apocalyptic number.

1312222020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312222020020 is an abundant number, since it is smaller than the sum of its proper divisors (1443839479444).

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

1312222020020 is a wasteful number, since it uses less digits than its factorization.

1312222020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9410899 (or 9410897 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1312222020020 its reverse (200202222131), we get a palindrome (1512424242151).

The spelling of 1312222020020 in words is "one trillion, three hundred twelve billion, two hundred twenty-two million, twenty thousand, twenty".