10200021061 has 2 divisors, whose sum is σ = 10200021062. Its totient is φ = 10200021060.

The previous prime is 10200021037. The next prime is 10200021101. The reversal of 10200021061 is 16012000201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9256364100 + 943656961 = 96210^2 + 30719^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200021061 - 2¹¹ = 10200019013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10200021001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100010530 + 5100010531.

It is an arithmetic number, because the mean of its divisors is an integer number (5100010531).

Almost surely, 2^10200021061 is an apocalyptic number.

It is an amenable number.

10200021061 is a deficient number, since it is larger than the sum of its proper divisors (1).

10200021061 is an equidigital number, since it uses as much as digits as its factorization.

10200021061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10200021061 its reverse (16012000201), we get a palindrome (26212021262).

The spelling of 10200021061 in words is "ten billion, two hundred million, twenty-one thousand, sixty-one".