21532205057102 has 16 divisors (see below), whose sum is σ = 32758178112000. Its totient is φ = 10612858323480.

The previous prime is 21532205057063. The next prime is 21532205057107. The reversal of 21532205057102 is 20175050223512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21532205057107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10552202 + ... + 12426317.

It is an arithmetic number, because the mean of its divisors is an integer number (2047386132000).

Almost surely, 2^{21532205057102} is an apocalyptic number.

21532205057102 is a deficient number, since it is larger than the sum of its proper divisors (11225973054898).

21532205057102 is a wasteful number, since it uses less digits than its factorization.

21532205057102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22985191.

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 21532205057102 in words is "twenty-one trillion, five hundred thirty-two billion, two hundred five million, fifty-seven thousand, one hundred two".