10231212299909 has 2 divisors, whose sum is σ = 10231212299910. Its totient is φ = 10231212299908.

The previous prime is 10231212299879. The next prime is 10231212299923. The reversal of 10231212299909 is 90999221213201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7067250064900 + 3163962235009 = 2658430^2 + 1778753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10231212299909 is a prime.

It is a super-2 number, since 2×10231212299909² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10231212299989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5115606149954 + 5115606149955.

It is an arithmetic number, because the mean of its divisors is an integer number (5115606149955).

Almost surely, 2^{10231212299909} is an apocalyptic number.

It is an amenable number.

10231212299909 is a deficient number, since it is larger than the sum of its proper divisors (1).

10231212299909 is an equidigital number, since it uses as much as digits as its factorization.

10231212299909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 50.

The spelling of 10231212299909 in words is "ten trillion, two hundred thirty-one billion, two hundred twelve million, two hundred ninety-nine thousand, nine hundred nine".