211023132109 has 2 divisors, whose sum is σ = 211023132110. Its totient is φ = 211023132108.

The previous prime is 211023132077. The next prime is 211023132113. The reversal of 211023132109 is 901231320112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191874661225 + 19148470884 = 438035^2 + 138378^2 .

It is a cyclic number.

It is not a de Polignac number, because 211023132109 - 2⁵ = 211023132077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211023135109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105511566054 + 105511566055.

It is an arithmetic number, because the mean of its divisors is an integer number (105511566055).

Almost surely, 2^211023132109 is an apocalyptic number.

It is an amenable number.

211023132109 is a deficient number, since it is larger than the sum of its proper divisors (1).

211023132109 is an equidigital number, since it uses as much as digits as its factorization.

211023132109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 211023132109 in words is "two hundred eleven billion, twenty-three million, one hundred thirty-two thousand, one hundred nine".