1021122312149 has 2 divisors, whose sum is σ = 1021122312150. Its totient is φ = 1021122312148.

The previous prime is 1021122312139. The next prime is 1021122312289. The reversal of 1021122312149 is 9412132211201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 838231802500 + 182890509649 = 915550^2 + 427657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021122312149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021122312139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510561156074 + 510561156075.

It is an arithmetic number, because the mean of its divisors is an integer number (510561156075).

Almost surely, 2^{1021122312149} is an apocalyptic number.

It is an amenable number.

1021122312149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021122312149 is an equidigital number, since it uses as much as digits as its factorization.

1021122312149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 1021122312149 in words is "one trillion, twenty-one billion, one hundred twenty-two million, three hundred twelve thousand, one hundred forty-nine".