21422011402 has 8 divisors (see below), whose sum is σ = 35054200512. Its totient is φ = 9737277900.

The previous prime is 21422011393. The next prime is 21422011417. The reversal of 21422011402 is 20411022412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21422011402.

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, 486863874 + ... + 486863917.

It is an arithmetic number, because the mean of its divisors is an integer number (4381775064).

Almost surely, 2^21422011402 is an apocalyptic number.

21422011402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21422011402 is a deficient number, since it is larger than the sum of its proper divisors (13632189110).

21422011402 is a wasteful number, since it uses less digits than its factorization.

21422011402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973727804.

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

Adding to 21422011402 its reverse (20411022412), we get a palindrome (41833033814).

The spelling of 21422011402 in words is "twenty-one billion, four hundred twenty-two million, eleven thousand, four hundred two".