1211100116139 has 8 divisors (see below), whose sum is σ = 1794222394320. Its totient is φ = 807400077408.

The previous prime is 1211100116137. The next prime is 1211100116141. The reversal of 1211100116139 is 9316110011121.

1211100116139 is a `hidden beast` number, since 1 + 21 + 1 + 10 + 0 + 11 + 613 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (1211100116137) and next prime (1211100116141).

It is not a de Polignac number, because 1211100116139 - 2¹ = 1211100116137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 44855559857 = 1211100116139 / (1 + 2 + 1 + 1 + 1 + 0 + 0 + 1 + 1 + 6 + 1 + 3 + 9).

It is not an unprimeable number, because it can be changed into a prime (1211100116137) 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, 22427779902 + ... + 22427779955.

It is an arithmetic number, because the mean of its divisors is an integer number (224277799290).

Almost surely, 2^{1211100116139} is an apocalyptic number.

1211100116139 is a deficient number, since it is larger than the sum of its proper divisors (583122278181).

1211100116139 is an equidigital number, since it uses as much as digits as its factorization.

1211100116139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44855559866 (or 44855559860 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 1211100116139 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred sixteen thousand, one hundred thirty-nine".