21002234134411 has 8 divisors (see below), whose sum is σ = 21454176720960. Its totient is φ = 20550503487168.

The previous prime is 21002234134393. The next prime is 21002234134429. The reversal of 21002234134411 is 11443143220012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21002234134393) and next prime (21002234134429).

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 21002234134411 - 2¹⁹ = 21002233610123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21002234134411.

It is not an unprimeable number, because it can be changed into a prime (21002234134481) 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, 52784496 + ... + 53180893.

It is an arithmetic number, because the mean of its divisors is an integer number (2681772090120).

Almost surely, 2^{21002234134411} is an apocalyptic number.

21002234134411 is a deficient number, since it is larger than the sum of its proper divisors (451942586549).

21002234134411 is a wasteful number, since it uses less digits than its factorization.

21002234134411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105969653.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21002234134411 its reverse (11443143220012), we get a palindrome (32445377354423).

The spelling of 21002234134411 in words is "twenty-one trillion, two billion, two hundred thirty-four million, one hundred thirty-four thousand, four hundred eleven".