201211212030139 has 2 divisors, whose sum is σ = 201211212030140. Its totient is φ = 201211212030138.

The previous prime is 201211212030077. The next prime is 201211212030317. The reversal of 201211212030139 is 931030212112102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201211212030139 - 2¹¹ = 201211212028091 is a prime.

It is not a weakly prime, because it can be changed into another prime (201211212030839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605606015069 + 100605606015070.

It is an arithmetic number, because the mean of its divisors is an integer number (100605606015070).

Almost surely, 2^{201211212030139} is an apocalyptic number.

201211212030139 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211212030139 is an equidigital number, since it uses as much as digits as its factorization.

201211212030139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 201211212030139 in words is "two hundred one trillion, two hundred eleven billion, two hundred twelve million, thirty thousand, one hundred thirty-nine".