1212327316081 has 8 divisors (see below), whose sum is σ = 1385579017664. Its totient is φ = 1039091135760.

The previous prime is 1212327316033. The next prime is 1212327316097. The reversal of 1212327316081 is 1806137232121.

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

It is a cyclic number.

It is not a de Polignac number, because 1212327316081 - 2¹⁷ = 1212327185009 is a prime.

It is a super-2 number, since 2×1212327316081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212327316081.

It is not an unprimeable number, because it can be changed into a prime (1212327316021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3712455 + ... + 4025788.

It is an arithmetic number, because the mean of its divisors is an integer number (173197377208).

Almost surely, 2^{1212327316081} is an apocalyptic number.

It is an amenable number.

1212327316081 is a deficient number, since it is larger than the sum of its proper divisors (173251701583).

1212327316081 is an equidigital number, since it uses as much as digits as its factorization.

1212327316081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7760631.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 1212327316081 in words is "one trillion, two hundred twelve billion, three hundred twenty-seven million, three hundred sixteen thousand, eighty-one".