2021311200149 has 2 divisors, whose sum is σ = 2021311200150. Its totient is φ = 2021311200148.

The previous prime is 2021311200121. The next prime is 2021311200217. The reversal of 2021311200149 is 9410021131202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1750580379025 + 270730821124 = 1323095^2 + 520318^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021311200149 - 2³⁶ = 1952591723413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021311200449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010655600074 + 1010655600075.

It is an arithmetic number, because the mean of its divisors is an integer number (1010655600075).

Almost surely, 2^{2021311200149} is an apocalyptic number.

It is an amenable number.

2021311200149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021311200149 is an equidigital number, since it uses as much as digits as its factorization.

2021311200149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 2021311200149 in words is "two trillion, twenty-one billion, three hundred eleven million, two hundred thousand, one hundred forty-nine".