21343101102 has 64 divisors (see below), whose sum is σ = 47697595200. Its totient is φ = 7074201600.

The previous prime is 21343101097. The next prime is 21343101139. The reversal of 21343101102 is 20110134312.

It is a super-2 number, since 2×21343101102² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11226352 + ... + 11228252.

It is an arithmetic number, because the mean of its divisors is an integer number (745274925).

Almost surely, 2^21343101102 is an apocalyptic number.

21343101102 is an abundant number, since it is smaller than the sum of its proper divisors (26354494098).

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

21343101102 is a wasteful number, since it uses less digits than its factorization.

21343101102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21343101102 its reverse (20110134312), we get a palindrome (41453235414).

The spelling of 21343101102 in words is "twenty-one billion, three hundred forty-three million, one hundred one thousand, one hundred two".