1321212113244 has 48 divisors (see below), whose sum is σ = 3434548126240. Its totient is φ = 439223316480.

The previous prime is 1321212113233. The next prime is 1321212113311. The reversal of 1321212113244 is 4423112121231.

1321212113244 is a `hidden beast` number, since 1 + 3 + 2 + 121 + 211 + 324 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16358437 + ... + 16439004.

Almost surely, 2^{1321212113244} is an apocalyptic number.

It is an amenable number.

1321212113244 is an abundant number, since it is smaller than the sum of its proper divisors (2113336012996).

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

1321212113244 is a wasteful number, since it uses less digits than its factorization.

1321212113244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32797827 (or 32797819 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 1321212113244 its reverse (4423112121231), we get a palindrome (5744324234475).

The spelling of 1321212113244 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, one hundred thirteen thousand, two hundred forty-four".