21352525201213 has 32 divisors (see below), whose sum is σ = 23449634058240. Its totient is φ = 19355161774080.

The previous prime is 21352525201193. The next prime is 21352525201223. The reversal of 21352525201213 is 31210252525312.

It is a cyclic number.

It is not a de Polignac number, because 21352525201213 - 2⁵ = 21352525201181 is a prime.

It is a super-2 number, since 2×21352525201213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21352525201223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254012556 + ... + 254096602.

It is an arithmetic number, because the mean of its divisors is an integer number (732801064320).

Almost surely, 2^{21352525201213} is an apocalyptic number.

It is an amenable number.

21352525201213 is a deficient number, since it is larger than the sum of its proper divisors (2097108857027).

21352525201213 is a wasteful number, since it uses less digits than its factorization.

21352525201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86397.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 21352525201213 its reverse (31210252525312), we get a palindrome (52562777726525).

The spelling of 21352525201213 in words is "twenty-one trillion, three hundred fifty-two billion, five hundred twenty-five million, two hundred one thousand, two hundred thirteen".