21302142041111 has 4 divisors (see below), whose sum is σ = 21571789408800. Its totient is φ = 21032494673424.

The previous prime is 21302142041093. The next prime is 21302142041231. The reversal of 21302142041111 is 11114024120312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21302142041111 - 2¹⁴ = 21302142024727 is a prime.

It is a super-2 number, since 2×21302142041111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302142040111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134823683726 + ... + 134823683883.

It is an arithmetic number, because the mean of its divisors is an integer number (5392947352200).

Almost surely, 2^{21302142041111} is an apocalyptic number.

21302142041111 is a deficient number, since it is larger than the sum of its proper divisors (269647367689).

21302142041111 is an equidigital number, since it uses as much as digits as its factorization.

21302142041111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269647367688.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 21302142041111 its reverse (11114024120312), we get a palindrome (32416166161423).

The spelling of 21302142041111 in words is "twenty-one trillion, three hundred two billion, one hundred forty-two million, forty-one thousand, one hundred eleven".