21313232132146 has 32 divisors (see below), whose sum is σ = 33454192831488. Its totient is φ = 10171281611520.

The previous prime is 21313232132107. The next prime is 21313232132147. The reversal of 21313232132146 is 64123123231312.

It is not an unprimeable number, because it can be changed into a prime (21313232132147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262363291 + ... + 262444513.

It is an arithmetic number, because the mean of its divisors is an integer number (1045443525984).

Almost surely, 2^{21313232132146} is an apocalyptic number.

21313232132146 is a deficient number, since it is larger than the sum of its proper divisors (12140960699342).

21313232132146 is a wasteful number, since it uses less digits than its factorization.

21313232132146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139306.

The product of its digits is 31104, while the sum is 34.

Adding to 21313232132146 its reverse (64123123231312), we get a palindrome (85436355363458).

The spelling of 21313232132146 in words is "twenty-one trillion, three hundred thirteen billion, two hundred thirty-two million, one hundred thirty-two thousand, one hundred forty-six".