10231221929 has 2 divisors, whose sum is σ = 10231221930. Its totient is φ = 10231221928.

The previous prime is 10231221893. The next prime is 10231221941. The reversal of 10231221929 is 92912213201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7912992025 + 2318229904 = 88955^2 + 48148^2 .

It is an emirp because it is prime and its reverse (92912213201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10231221929 - 2¹² = 10231217833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10231221895 and 10231221904.

It is not a weakly prime, because it can be changed into another prime (10239221929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5115610964 + 5115610965.

It is an arithmetic number, because the mean of its divisors is an integer number (5115610965).

Almost surely, 2^10231221929 is an apocalyptic number.

It is an amenable number.

10231221929 is a deficient number, since it is larger than the sum of its proper divisors (1).

10231221929 is an equidigital number, since it uses as much as digits as its factorization.

10231221929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 10231221929 in words is "ten billion, two hundred thirty-one million, two hundred twenty-one thousand, nine hundred twenty-nine".