21002124301135 has 8 divisors (see below), whose sum is σ = 25203689216640. Its totient is φ = 16800939404064.

The previous prime is 21002124301133. The next prime is 21002124301139. The reversal of 21002124301135 is 53110342120012.

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

It is a cyclic number.

It is not a de Polignac number, because 21002124301135 - 2¹ = 21002124301133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002124301133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94883007 + ... + 95104096.

It is an arithmetic number, because the mean of its divisors is an integer number (3150461152080).

Almost surely, 2^{21002124301135} is an apocalyptic number.

21002124301135 is a deficient number, since it is larger than the sum of its proper divisors (4201564915505).

21002124301135 is a wasteful number, since it uses less digits than its factorization.

21002124301135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190009217.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 21002124301135 its reverse (53110342120012), we get a palindrome (74112466421147).

The spelling of 21002124301135 in words is "twenty-one trillion, two billion, one hundred twenty-four million, three hundred one thousand, one hundred thirty-five".