2121112211149 has 2 divisors, whose sum is σ = 2121112211150. Its totient is φ = 2121112211148.

The previous prime is 2121112211117. The next prime is 2121112211203. The reversal of 2121112211149 is 9411122111212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1994611062249 + 126501148900 = 1412307^2 + 355670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121112211149 - 2⁵ = 2121112211117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121119211149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060556105574 + 1060556105575.

It is an arithmetic number, because the mean of its divisors is an integer number (1060556105575).

Almost surely, 2^{2121112211149} is an apocalyptic number.

It is an amenable number.

2121112211149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121112211149 is an equidigital number, since it uses as much as digits as its factorization.

2121112211149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 28.

The spelling of 2121112211149 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred eleven thousand, one hundred forty-nine".