1211102100139 has 2 divisors, whose sum is σ = 1211102100140. Its totient is φ = 1211102100138.

The previous prime is 1211102100077. The next prime is 1211102100157. The reversal of 1211102100139 is 9310012011121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211102100139 - 2¹⁷ = 1211101969067 is a prime.

It is a super-2 number, since 2×1211102100139² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1211102100179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605551050069 + 605551050070.

It is an arithmetic number, because the mean of its divisors is an integer number (605551050070).

Almost surely, 2^{1211102100139} is an apocalyptic number.

1211102100139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211102100139 is an equidigital number, since it uses as much as digits as its factorization.

1211102100139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 1211102100139 in words is "one trillion, two hundred eleven billion, one hundred two million, one hundred thousand, one hundred thirty-nine".