201023220312149 has 2 divisors, whose sum is σ = 201023220312150. Its totient is φ = 201023220312148.

The previous prime is 201023220312053. The next prime is 201023220312163. The reversal of 201023220312149 is 941213022320102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198221563657924 + 2801656654225 = 14079118^2 + 1673815^2 .

It is a cyclic number.

It is not a de Polignac number, because 201023220312149 - 2¹⁶ = 201023220246613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201023220312199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100511610156074 + 100511610156075.

It is an arithmetic number, because the mean of its divisors is an integer number (100511610156075).

Almost surely, 2^{201023220312149} is an apocalyptic number.

It is an amenable number.

201023220312149 is a deficient number, since it is larger than the sum of its proper divisors (1).

201023220312149 is an equidigital number, since it uses as much as digits as its factorization.

201023220312149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 201023220312149 in words is "two hundred one trillion, twenty-three billion, two hundred twenty million, three hundred twelve thousand, one hundred forty-nine".