10221212002129 has 2 divisors, whose sum is σ = 10221212002130. Its totient is φ = 10221212002128.

The previous prime is 10221212002051. The next prime is 10221212002181. The reversal of 10221212002129 is 92120021212201.

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., 6150796806400 + 4070415195729 = 2480080^2 + 2017527^2 .

It is an emirp because it is prime and its reverse (92120021212201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10221212002129 - 2²³ = 10221203613521 is a prime.

It is not a weakly prime, because it can be changed into another prime (10221212072129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110606001064 + 5110606001065.

It is an arithmetic number, because the mean of its divisors is an integer number (5110606001065).

Almost surely, 2^{10221212002129} is an apocalyptic number.

It is an amenable number.

10221212002129 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221212002129 is an equidigital number, since it uses as much as digits as its factorization.

10221212002129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 10221212002129 in words is "ten trillion, two hundred twenty-one billion, two hundred twelve million, two thousand, one hundred twenty-nine".