12101231251 has 2 divisors, whose sum is σ = 12101231252. Its totient is φ = 12101231250.

The previous prime is 12101231249. The next prime is 12101231281. The reversal of 12101231251 is 15213210121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12101231251 - 2¹ = 12101231249 is a prime.

Together with 12101231249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12101231281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050615625 + 6050615626.

It is an arithmetic number, because the mean of its divisors is an integer number (6050615626).

Almost surely, 2^12101231251 is an apocalyptic number.

12101231251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101231251 is an equidigital number, since it uses as much as digits as its factorization.

12101231251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 12101231251 its reverse (15213210121), we get a palindrome (27314441372).

The spelling of 12101231251 in words is "twelve billion, one hundred one million, two hundred thirty-one thousand, two hundred fifty-one".