1216025037321 has 8 divisors (see below), whose sum is σ = 1626546803040. Its totient is φ = 808093314912.

The previous prime is 1216025037319. The next prime is 1216025037361. The reversal of 1216025037321 is 1237305206121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1216025037321 - 2¹ = 1216025037319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1216025037301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647509731 + ... + 647511608.

It is an arithmetic number, because the mean of its divisors is an integer number (203318350380).

Almost surely, 2^{1216025037321} is an apocalyptic number.

It is an amenable number.

1216025037321 is a deficient number, since it is larger than the sum of its proper divisors (410521765719).

1216025037321 is a wasteful number, since it uses less digits than its factorization.

1216025037321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295021655.

The product of its (nonzero) digits is 15120, while the sum is 33.

The spelling of 1216025037321 in words is "one trillion, two hundred sixteen billion, twenty-five million, thirty-seven thousand, three hundred twenty-one".