10212051225521 has 2 divisors, whose sum is σ = 10212051225522. Its totient is φ = 10212051225520.

The previous prime is 10212051225457. The next prime is 10212051225547. The reversal of 10212051225521 is 12552215021201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9463590927025 + 748460298496 = 3076295^2 + 865136^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212051225521 - 2⁶ = 10212051225457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10212051225121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106025612760 + 5106025612761.

It is an arithmetic number, because the mean of its divisors is an integer number (5106025612761).

Almost surely, 2^{10212051225521} is an apocalyptic number.

It is an amenable number.

10212051225521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212051225521 is an equidigital number, since it uses as much as digits as its factorization.

10212051225521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 10212051225521 its reverse (12552215021201), we get a palindrome (22764266246722).

The spelling of 10212051225521 in words is "ten trillion, two hundred twelve billion, fifty-one million, two hundred twenty-five thousand, five hundred twenty-one".