1321550213512 has 32 divisors (see below), whose sum is σ = 2482167093120. Its totient is φ = 659639747520.

The previous prime is 1321550213509. The next prime is 1321550213521. The reversal of 1321550213512 is 2153120551231.

It is a happy number.

It is a super-2 number, since 2×1321550213512² (a number of 25 digits) contains 22 as substring.

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, 14353062 + ... + 14444842.

It is an arithmetic number, because the mean of its divisors is an integer number (77567721660).

Almost surely, 2^{1321550213512} is an apocalyptic number.

It is an amenable number.

1321550213512 is a deficient number, since it is larger than the sum of its proper divisors (1160616879608).

1321550213512 is a wasteful number, since it uses less digits than its factorization.

1321550213512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94861 (or 94857 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 1321550213512 its reverse (2153120551231), we get a palindrome (3474670764743).

The spelling of 1321550213512 in words is "one trillion, three hundred twenty-one billion, five hundred fifty million, two hundred thirteen thousand, five hundred twelve".