21214421102 has 16 divisors (see below), whose sum is σ = 36370458240. Its totient is φ = 9091174968.

The previous prime is 21214421089. The next prime is 21214421119. The reversal of 21214421102 is 20112441212.

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 7 ways as a sum of consecutive naturals, for example, 148049 + ... + 253667.

It is an arithmetic number, because the mean of its divisors is an integer number (2273153640).

Almost surely, 2^21214421102 is an apocalyptic number.

21214421102 is a deficient number, since it is larger than the sum of its proper divisors (15156037138).

21214421102 is a wasteful number, since it uses less digits than its factorization.

21214421102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119975.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21214421102 its reverse (20112441212), we get a palindrome (41326862314).

The spelling of 21214421102 in words is "twenty-one billion, two hundred fourteen million, four hundred twenty-one thousand, one hundred two".