9229690042421 has 2 divisors, whose sum is σ = 9229690042422. Its totient is φ = 9229690042420.

The previous prime is 9229690042369. The next prime is 9229690042423. The reversal of 9229690042421 is 1242400969229.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6969673920196 + 2260016122225 = 2640014^2 + 1503335^2 .

It is a cyclic number.

It is not a de Polignac number, because 9229690042421 - 2³⁰ = 9228616300597 is a prime.

Together with 9229690042423, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9229690042421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9229690042423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4614845021210 + 4614845021211.

It is an arithmetic number, because the mean of its divisors is an integer number (4614845021211).

Almost surely, 2^{9229690042421} is an apocalyptic number.

It is an amenable number.

9229690042421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9229690042421 is an equidigital number, since it uses as much as digits as its factorization.

9229690042421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 9229690042421 in words is "nine trillion, two hundred twenty-nine billion, six hundred ninety million, forty-two thousand, four hundred twenty-one".