43320021123 has 8 divisors (see below), whose sum is σ = 57761475408. Its totient is φ = 28879290464.

The previous prime is 43320021083. The next prime is 43320021139. The reversal of 43320021123 is 32112002334.

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 43320021123 - 2¹⁶ = 43319955587 is a prime.

It is a super-2 number, since 2×43320021123² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43320021123.

It is not an unprimeable number, because it can be changed into a prime (43320021193) 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, 21036 + ... + 295097.

It is an arithmetic number, because the mean of its divisors is an integer number (7220184426).

Almost surely, 2^43320021123 is an apocalyptic number.

43320021123 is a deficient number, since it is larger than the sum of its proper divisors (14441454285).

43320021123 is a wasteful number, since it uses less digits than its factorization.

43320021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361813.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 43320021123 its reverse (32112002334), we get a palindrome (75432023457).

The spelling of 43320021123 in words is "forty-three billion, three hundred twenty million, twenty-one thousand, one hundred twenty-three".