21015505341002 has 16 divisors (see below), whose sum is σ = 31561453828800. Its totient is φ = 10495021227840.

The previous prime is 21015505341001. The next prime is 21015505341013. The reversal of 21015505341002 is 20014350551012.

It is not an unprimeable number, because it can be changed into a prime (21015505341001) 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, 119068274 + ... + 119244642.

It is an arithmetic number, because the mean of its divisors is an integer number (1972590864300).

Almost surely, 2^{21015505341002} is an apocalyptic number.

21015505341002 is a deficient number, since it is larger than the sum of its proper divisors (10545948487798).

21015505341002 is a wasteful number, since it uses less digits than its factorization.

21015505341002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248221.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 21015505341002 its reverse (20014350551012), we get a palindrome (41029855892014).

The spelling of 21015505341002 in words is "twenty-one trillion, fifteen billion, five hundred five million, three hundred forty-one thousand, two".