10212220021501 has 2 divisors, whose sum is σ = 10212220021502. Its totient is φ = 10212220021500.

The previous prime is 10212220021477. The next prime is 10212220021561. The reversal of 10212220021501 is 10512002221201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5684576535225 + 4527643486276 = 2384235^2 + 2127826^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212220021501 - 2⁷ = 10212220021373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212220021561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106110010750 + 5106110010751.

It is an arithmetic number, because the mean of its divisors is an integer number (5106110010751).

Almost surely, 2^{10212220021501} is an apocalyptic number.

It is an amenable number.

10212220021501 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212220021501 is an equidigital number, since it uses as much as digits as its factorization.

10212220021501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 10212220021501 its reverse (10512002221201), we get a palindrome (20724222242702).

The spelling of 10212220021501 in words is "ten trillion, two hundred twelve billion, two hundred twenty million, twenty-one thousand, five hundred one".