21352525201193 has 2 divisors, whose sum is σ = 21352525201194. Its totient is φ = 21352525201192.

The previous prime is 21352525201181. The next prime is 21352525201223. The reversal of 21352525201193 is 39110252525312.

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., 18011807617024 + 3340717584169 = 4244032^2 + 1827763^2 .

It is a cyclic number.

It is not a de Polignac number, because 21352525201193 - 2²⁴ = 21352508423977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21352525201193.

It is not a weakly prime, because it can be changed into another prime (21352525201393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676262600596 + 10676262600597.

It is an arithmetic number, because the mean of its divisors is an integer number (10676262600597).

Almost surely, 2^{21352525201193} is an apocalyptic number.

It is an amenable number.

21352525201193 is a deficient number, since it is larger than the sum of its proper divisors (1).

21352525201193 is an equidigital number, since it uses as much as digits as its factorization.

21352525201193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 21352525201193 in words is "twenty-one trillion, three hundred fifty-two billion, five hundred twenty-five million, two hundred one thousand, one hundred ninety-three".