201220000121149 has 2 divisors, whose sum is σ = 201220000121150. Its totient is φ = 201220000121148.

The previous prime is 201220000121053. The next prime is 201220000121219. The reversal of 201220000121149 is 941121000022102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147359739629124 + 53860260492025 = 12139182^2 + 7338955^2 .

It is a cyclic number.

It is not a de Polignac number, because 201220000121149 - 2²³ = 201219991732541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201220000124149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610000060574 + 100610000060575.

It is an arithmetic number, because the mean of its divisors is an integer number (100610000060575).

Almost surely, 2^{201220000121149} is an apocalyptic number.

It is an amenable number.

201220000121149 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220000121149 is an equidigital number, since it uses as much as digits as its factorization.

201220000121149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 201220000121149 in words is "two hundred one trillion, two hundred twenty billion, one hundred twenty-one thousand, one hundred forty-nine".