1312121330210 has 16 divisors (see below), whose sum is σ = 2361872268792. Its totient is φ = 524836560000.

The previous prime is 1312121330197. The next prime is 1312121330227. The reversal of 1312121330210 is 120331212131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1116972083161 + 195149247049 = 1056869^2 + 441757^2 .

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, 1029251 + ... + 1919270.

Almost surely, 2^{1312121330210} is an apocalyptic number.

1312121330210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312121330210 is a deficient number, since it is larger than the sum of its proper divisors (1049750938582).

1312121330210 is a wasteful number, since it uses less digits than its factorization.

1312121330210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993029.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1312121330210 its reverse (120331212131), we get a palindrome (1432452542341).

The spelling of 1312121330210 in words is "one trillion, three hundred twelve billion, one hundred twenty-one million, three hundred thirty thousand, two hundred ten".