21142220014 has 8 divisors (see below), whose sum is σ = 31844921328. Its totient is φ = 10527246240.

The previous prime is 21142220009. The next prime is 21142220027. The reversal of 21142220014 is 41002224112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21142219973 and 21142220000.

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, 21931282 + ... + 21932245.

It is an arithmetic number, because the mean of its divisors is an integer number (3980615166).

Almost surely, 2^21142220014 is an apocalyptic number.

21142220014 is a deficient number, since it is larger than the sum of its proper divisors (10702701314).

21142220014 is a wasteful number, since it uses less digits than its factorization.

21142220014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43863770.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21142220014 its reverse (41002224112), we get a palindrome (62144444126).

The spelling of 21142220014 in words is "twenty-one billion, one hundred forty-two million, two hundred twenty thousand, fourteen".