21214122110323 has 4 divisors (see below), whose sum is σ = 21214320726760. Its totient is φ = 21213923493888.

The previous prime is 21214122110239. The next prime is 21214122110339. The reversal of 21214122110323 is 32301122141212.

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 21214122110323 - 2⁴¹ = 19015098854771 is a prime.

It is a super-3 number, since 3×21214122110323³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21214122111323) 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, 99147918 + ... + 99361651.

It is an arithmetic number, because the mean of its divisors is an integer number (5303580181690).

Almost surely, 2^{21214122110323} is an apocalyptic number.

21214122110323 is a deficient number, since it is larger than the sum of its proper divisors (198616437).

21214122110323 is a wasteful number, since it uses less digits than its factorization.

21214122110323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198616436.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21214122110323 its reverse (32301122141212), we get a palindrome (53515244251535).

The spelling of 21214122110323 in words is "twenty-one trillion, two hundred fourteen billion, one hundred twenty-two million, one hundred ten thousand, three hundred twenty-three".