20121000201149 has 2 divisors, whose sum is σ = 20121000201150. Its totient is φ = 20121000201148.

The previous prime is 20121000201121. The next prime is 20121000201157. The reversal of 20121000201149 is 94110200012102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20045275068025 + 75725133124 = 4477195^2 + 275182^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121000201149 - 2⁴⁴ = 2528814156733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121000201199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060500100574 + 10060500100575.

It is an arithmetic number, because the mean of its divisors is an integer number (10060500100575).

Almost surely, 2^{20121000201149} is an apocalyptic number.

It is an amenable number.

20121000201149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121000201149 is an equidigital number, since it uses as much as digits as its factorization.

20121000201149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 20121000201149 in words is "twenty trillion, one hundred twenty-one billion, two hundred one thousand, one hundred forty-nine".