20111000021149 has 2 divisors, whose sum is σ = 20111000021150. Its totient is φ = 20111000021148.

The previous prime is 20111000021089. The next prime is 20111000021219. The reversal of 20111000021149 is 94112000011102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17567750132100 + 2543249889049 = 4191390^2 + 1594757^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111000021149 - 2¹¹ = 20111000019101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111000024149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055500010574 + 10055500010575.

It is an arithmetic number, because the mean of its divisors is an integer number (10055500010575).

Almost surely, 2^{20111000021149} is an apocalyptic number.

It is an amenable number.

20111000021149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111000021149 is an equidigital number, since it uses as much as digits as its factorization.

20111000021149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 20111000021149 in words is "twenty trillion, one hundred eleven billion, twenty-one thousand, one hundred forty-nine".