1211005364016 has 120 divisors (see below), whose sum is σ = 3853265094000. Its totient is φ = 325648490496.

The previous prime is 1211005363987. The next prime is 1211005364021. The reversal of 1211005364016 is 6104635001121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15103641 + ... + 15183608.

It is an arithmetic number, because the mean of its divisors is an integer number (32110542450).

Almost surely, 2^{1211005364016} is an apocalyptic number.

1211005364016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1211005364016 is an abundant number, since it is smaller than the sum of its proper divisors (2642259729984).

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

1211005364016 is a wasteful number, since it uses less digits than its factorization.

1211005364016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30287291 (or 30287278 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 1211005364016 in words is "one trillion, two hundred eleven billion, five million, three hundred sixty-four thousand, sixteen".