1213112131300 has 18 divisors (see below), whose sum is σ = 2632453325138. Its totient is φ = 485244852480.

The previous prime is 1213112131291. The next prime is 1213112131327. The reversal of 1213112131300 is 31312113121.

It can be written as a sum of positive squares in 3 ways, for example, as 116869627044 + 1096242504256 = 341862^2 + 1047016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6065560557 + ... + 6065560756.

Almost surely, 2^{1213112131300} is an apocalyptic number.

1213112131300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213112131300 is an abundant number, since it is smaller than the sum of its proper divisors (1419341193838).

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

1213112131300 is a wasteful number, since it uses less digits than its factorization.

1213112131300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12131121327 (or 12131121320 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1213112131300 its reverse (31312113121), we get a palindrome (1244424244421).

The spelling of 1213112131300 in words is "one trillion, two hundred thirteen billion, one hundred twelve million, one hundred thirty-one thousand, three hundred".