10121112389 has 2 divisors, whose sum is σ = 10121112390. Its totient is φ = 10121112388.

The previous prime is 10121112377. The next prime is 10121112427. The reversal of 10121112389 is 98321112101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6927732289 + 3193380100 = 83233^2 + 56510^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121112389 - 2³² = 5826145093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121112319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060556194 + 5060556195.

It is an arithmetic number, because the mean of its divisors is an integer number (5060556195).

Almost surely, 2^10121112389 is an apocalyptic number.

It is an amenable number.

10121112389 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121112389 is an equidigital number, since it uses as much as digits as its factorization.

10121112389 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 29.

The spelling of 10121112389 in words is "ten billion, one hundred twenty-one million, one hundred twelve thousand, three hundred eighty-nine".