21423031311102 has 64 divisors (see below), whose sum is σ = 44759465049600. Its totient is φ = 6829726204800.

The previous prime is 21423031311083. The next prime is 21423031311119. The reversal of 21423031311102 is 20111313032412.

It is a super-3 number, since 3×21423031311102³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320202 + ... + 6553517.

It is an arithmetic number, because the mean of its divisors is an integer number (699366641400).

Almost surely, 2^{21423031311102} is an apocalyptic number.

21423031311102 is an abundant number, since it is smaller than the sum of its proper divisors (23336433738498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21423031311102 is a wasteful number, since it uses less digits than its factorization.

21423031311102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874001.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21423031311102 its reverse (20111313032412), we get a palindrome (41534344343514).

The spelling of 21423031311102 in words is "twenty-one trillion, four hundred twenty-three billion, thirty-one million, three hundred eleven thousand, one hundred two".