1216213546141 has 24 divisors (see below), whose sum is σ = 1358901815040. Its totient is φ = 1087500105120.

The previous prime is 1216213546139. The next prime is 1216213546169. The reversal of 1216213546141 is 1416453126121.

It is not a de Polignac number, because 1216213546141 - 2¹ = 1216213546139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1216213546141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216213546741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2272131 + ... + 2755903.

It is an arithmetic number, because the mean of its divisors is an integer number (56620908960).

Almost surely, 2^{1216213546141} is an apocalyptic number.

1216213546141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1216213546141 is a deficient number, since it is larger than the sum of its proper divisors (142688268899).

1216213546141 is a wasteful number, since it uses less digits than its factorization.

1216213546141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484137 (or 484126 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The spelling of 1216213546141 in words is "one trillion, two hundred sixteen billion, two hundred thirteen million, five hundred forty-six thousand, one hundred forty-one".