1312222120140 has 24 divisors (see below), whose sum is σ = 3674221936560. Its totient is φ = 349925898688.

The previous prime is 1312222120117. The next prime is 1312222120189. The reversal of 1312222120140 is 410212222131.

It is a happy 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, 10935184275 + ... + 10935184394.

It is an arithmetic number, because the mean of its divisors is an integer number (153092580690).

Almost surely, 2^{1312222120140} is an apocalyptic number.

1312222120140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312222120140 is an abundant number, since it is smaller than the sum of its proper divisors (2361999816420).

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

1312222120140 is a wasteful number, since it uses less digits than its factorization.

1312222120140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21870368681 (or 21870368679 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1312222120140 its reverse (410212222131), we get a palindrome (1722434342271).

The spelling of 1312222120140 in words is "one trillion, three hundred twelve billion, two hundred twenty-two million, one hundred twenty thousand, one hundred forty".