211020102111139 has 2 divisors, whose sum is σ = 211020102111140. Its totient is φ = 211020102111138.

The previous prime is 211020102111109. The next prime is 211020102111163. The reversal of 211020102111139 is 931111201020112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211020102111139 - 2³⁹ = 210470346297251 is a prime.

It is not a weakly prime, because it can be changed into another prime (211020102111109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510051055569 + 105510051055570.

It is an arithmetic number, because the mean of its divisors is an integer number (105510051055570).

Almost surely, 2^{211020102111139} is an apocalyptic number.

211020102111139 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020102111139 is an equidigital number, since it uses as much as digits as its factorization.

211020102111139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 211020102111139 in words is "two hundred eleven trillion, twenty billion, one hundred two million, one hundred eleven thousand, one hundred thirty-nine".