10601361821 has 2 divisors, whose sum is σ = 10601361822. Its totient is φ = 10601361820.

The previous prime is 10601361817. The next prime is 10601361913. The reversal of 10601361821 is 12816310601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9967027225 + 634334596 = 99835^2 + 25186^2 .

It is a cyclic number.

It is not a de Polignac number, because 10601361821 - 2² = 10601361817 is a prime.

It is a super-2 number, since 2×10601361821² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10601331821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300680910 + 5300680911.

It is an arithmetic number, because the mean of its divisors is an integer number (5300680911).

Almost surely, 2^10601361821 is an apocalyptic number.

It is an amenable number.

10601361821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10601361821 is an equidigital number, since it uses as much as digits as its factorization.

10601361821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 10601361821 in words is "ten billion, six hundred one million, three hundred sixty-one thousand, eight hundred twenty-one".