21532102235013 has 8 divisors (see below), whose sum is σ = 28963535750208. Its totient is φ = 14227701771584.

The previous prime is 21532102234991. The next prime is 21532102235041. The reversal of 21532102235013 is 31053220123512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21532102235013 - 2¹² = 21532102230917 is a prime.

It is a super-2 number, since 2×21532102235013² (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 (21532102235513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31758262545 + ... + 31758263222.

It is an arithmetic number, because the mean of its divisors is an integer number (3620441968776).

Almost surely, 2^{21532102235013} is an apocalyptic number.

It is an amenable number.

21532102235013 is a deficient number, since it is larger than the sum of its proper divisors (7431433515195).

21532102235013 is a wasteful number, since it uses less digits than its factorization.

21532102235013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63516525883.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 21532102235013 its reverse (31053220123512), we get a palindrome (52585322358525).

The spelling of 21532102235013 in words is "twenty-one trillion, five hundred thirty-two billion, one hundred two million, two hundred thirty-five thousand, thirteen".