1312121150 has 24 divisors (see below), whose sum is σ = 2441704584. Its totient is φ = 524599200.

The previous prime is 1312121143. The next prime is 1312121177. The reversal of 1312121150 is 511212131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129260 + ... + 139040.

It is an arithmetic number, because the mean of its divisors is an integer number (101737691).

Almost surely, 2^1312121150 is an apocalyptic number.

1312121150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312121150 is a deficient number, since it is larger than the sum of its proper divisors (1129583434).

1312121150 is a wasteful number, since it uses less digits than its factorization.

1312121150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476 (or 12471 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1312121150 is about 36223.2128613683. The cubic root of 1312121150 is about 1094.7744300201.

Adding to 1312121150 its reverse (511212131), we get a palindrome (1823333281).

The spelling of 1312121150 in words is "one billion, three hundred twelve million, one hundred twenty-one thousand, one hundred fifty".