21124020013102 has 8 divisors (see below), whose sum is σ = 31982161141656. Its totient is φ = 10463299632552.

The previous prime is 21124020013099. The next prime is 21124020013127. The reversal of 21124020013102 is 20131002042112.

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 21124020013102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49355186733 + ... + 49355187160.

It is an arithmetic number, because the mean of its divisors is an integer number (3997770142707).

Almost surely, 2^{21124020013102} is an apocalyptic number.

21124020013102 is a deficient number, since it is larger than the sum of its proper divisors (10858141128554).

21124020013102 is a wasteful number, since it uses less digits than its factorization.

21124020013102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98710374002.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21124020013102 its reverse (20131002042112), we get a palindrome (41255022055214).

The spelling of 21124020013102 in words is "twenty-one trillion, one hundred twenty-four billion, twenty million, thirteen thousand, one hundred two".