21321322130111 has 8 divisors (see below), whose sum is σ = 22256628535680. Its totient is φ = 20386706757912.

The previous prime is 21321322130099. The next prime is 21321322130149. The reversal of 21321322130111 is 11103122312312.

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 21321322130111 - 2⁶ = 21321322130047 is a prime.

It is a super-2 number, since 2×21321322130111² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321322132111) 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, 172695281 + ... + 172818698.

It is an arithmetic number, because the mean of its divisors is an integer number (2782078566960).

Almost surely, 2^{21321322130111} is an apocalyptic number.

21321322130111 is a deficient number, since it is larger than the sum of its proper divisors (935306405569).

21321322130111 is a wasteful number, since it uses less digits than its factorization.

21321322130111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345516685.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21321322130111 its reverse (11103122312312), we get a palindrome (32424444442423).

The spelling of 21321322130111 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred twenty-two million, one hundred thirty thousand, one hundred eleven".