21302012101121 has 8 divisors (see below), whose sum is σ = 21571812549120. Its totient is φ = 21032215521408.

The previous prime is 21302012101109. The next prime is 21302012101129. The reversal of 21302012101121 is 12110121020312.

It is a happy number.

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 21302012101121 - 2³⁸ = 21027134194177 is a prime.

It is a super-2 number, since 2×21302012101121² (a number of 27 digits) contains 22 as substring.

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 21302012101121.

It is not an unprimeable number, because it can be changed into a prime (21302012101129) 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, 11057105 + ... + 12839921.

It is an arithmetic number, because the mean of its divisors is an integer number (2696476568640).

Almost surely, 2^{21302012101121} is an apocalyptic number.

It is an amenable number.

21302012101121 is a deficient number, since it is larger than the sum of its proper divisors (269800447999).

21302012101121 is a wasteful number, since it uses less digits than its factorization.

21302012101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934143.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21302012101121 its reverse (12110121020312), we get a palindrome (33412133121433).

The spelling of 21302012101121 in words is "twenty-one trillion, three hundred two billion, twelve million, one hundred one thousand, one hundred twenty-one".