10215104429221 has 2 divisors, whose sum is σ = 10215104429222. Its totient is φ = 10215104429220.

The previous prime is 10215104429147. The next prime is 10215104429239. The reversal of 10215104429221 is 12292440151201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8861397776100 + 1353706653121 = 2976810^2 + 1163489^2 .

It is a cyclic number.

It is not a de Polignac number, because 10215104429221 - 2³⁷ = 10077665475749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10215104429291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5107552214610 + 5107552214611.

It is an arithmetic number, because the mean of its divisors is an integer number (5107552214611).

Almost surely, 2^{10215104429221} is an apocalyptic number.

It is an amenable number.

10215104429221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10215104429221 is an equidigital number, since it uses as much as digits as its factorization.

10215104429221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 10215104429221 in words is "ten trillion, two hundred fifteen billion, one hundred four million, four hundred twenty-nine thousand, two hundred twenty-one".