1311213122010 has 48 divisors (see below), whose sum is σ = 3719077221600. Its totient is φ = 317869847520.

The previous prime is 1311213122003. The next prime is 1311213122053. The reversal of 1311213122010 is 102213121131.

1311213122010 is a `hidden beast` number, since 1 + 31 + 121 + 312 + 201 + 0 = 666.

It is a super-2 number, since 2×1311213122010² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 662227860 + ... + 662229839.

It is an arithmetic number, because the mean of its divisors is an integer number (77480775450).

Almost surely, 2^{1311213122010} is an apocalyptic number.

1311213122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311213122010 is an abundant number, since it is smaller than the sum of its proper divisors (2407864099590).

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

1311213122010 is a wasteful number, since it uses less digits than its factorization.

1311213122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324457723 (or 1324457720 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1311213122010 its reverse (102213121131), we get a palindrome (1413426243141).

The spelling of 1311213122010 in words is "one trillion, three hundred eleven billion, two hundred thirteen million, one hundred twenty-two thousand, ten".