22121313100043 has 4 divisors (see below), whose sum is σ = 23083109321808. Its totient is φ = 21159516878280.

The previous prime is 22121313100021. The next prime is 22121313100049. The reversal of 22121313100043 is 34000131312122.

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-22121313100043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 961796221741 = 22121313100043 / (2 + 2 + 1 + 2 + 1 + 3 + 1 + 3 + 1 + 0 + 0 + 0 + 4 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22121313099991 and 22121313100018.

It is not an unprimeable number, because it can be changed into a prime (22121313100049) 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, 480898110848 + ... + 480898110893.

It is an arithmetic number, because the mean of its divisors is an integer number (5770777330452).

Almost surely, 2^{22121313100043} is an apocalyptic number.

22121313100043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22121313100043 is a deficient number, since it is larger than the sum of its proper divisors (961796221765).

22121313100043 is an equidigital number, since it uses as much as digits as its factorization.

22121313100043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961796221764.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 22121313100043 its reverse (34000131312122), we get a palindrome (56121444412165).

The spelling of 22121313100043 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred thirteen million, one hundred thousand, forty-three".