21163122106343 has 4 divisors (see below), whose sum is σ = 24186425264400. Its totient is φ = 18139818948288.

The previous prime is 21163122106331. The next prime is 21163122106409. The reversal of 21163122106343 is 34360122136112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21163122106343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21163122105343) 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, 1511651579018 + ... + 1511651579031.

It is an arithmetic number, because the mean of its divisors is an integer number (6046606316100).

Almost surely, 2^{21163122106343} is an apocalyptic number.

21163122106343 is a deficient number, since it is larger than the sum of its proper divisors (3023303158057).

21163122106343 is an equidigital number, since it uses as much as digits as its factorization.

21163122106343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023303158056.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 21163122106343 in words is "twenty-one trillion, one hundred sixty-three billion, one hundred twenty-two million, one hundred six thousand, three hundred forty-three".