21013312311002 has 16 divisors (see below), whose sum is σ = 34390187550432. Its totient is φ = 9550181316720.

The previous prime is 21013312311001. The next prime is 21013312311049. The reversal of 21013312311002 is 20011321331012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21013312311001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66051668 + ... + 66369039.

It is an arithmetic number, because the mean of its divisors is an integer number (2149386721902).

Almost surely, 2^{21013312311002} is an apocalyptic number.

21013312311002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21013312311002 is a deficient number, since it is larger than the sum of its proper divisors (13376875239430).

21013312311002 is a wasteful number, since it uses less digits than its factorization.

21013312311002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132427933.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21013312311002 its reverse (20011321331012), we get a palindrome (41024633642014).

The spelling of 21013312311002 in words is "twenty-one trillion, thirteen billion, three hundred twelve million, three hundred eleven thousand, two".