21194021102 has 8 divisors (see below), whose sum is σ = 31981397616. Its totient is φ = 10533555232.

The previous prime is 21194021089. The next prime is 21194021113. The reversal of 21194021102 is 20112049112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 31727243 + ... + 31727910.

It is an arithmetic number, because the mean of its divisors is an integer number (3997674702).

Almost surely, 2^21194021102 is an apocalyptic number.

21194021102 is a deficient number, since it is larger than the sum of its proper divisors (10787376514).

21194021102 is a wasteful number, since it uses less digits than its factorization.

21194021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63455322.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 21194021102 in words is "twenty-one billion, one hundred ninety-four million, twenty-one thousand, one hundred two".