123220434430 has 16 divisors (see below), whose sum is σ = 221967812880. Its totient is φ = 49250166912.

The previous prime is 123220434427. The next prime is 123220434431. The reversal of 123220434430 is 34434022321.

It is a super-2 number, since 2×123220434430² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220434431) 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, 4737240 + ... + 4763179.

It is an arithmetic number, because the mean of its divisors is an integer number (13872988305).

Almost surely, 2^123220434430 is an apocalyptic number.

123220434430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123220434430 is a deficient number, since it is larger than the sum of its proper divisors (98747378450).

123220434430 is a wasteful number, since it uses less digits than its factorization.

123220434430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9501723.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 123220434430 its reverse (34434022321), we get a palindrome (157654456751).

The spelling of 123220434430 in words is "one hundred twenty-three billion, two hundred twenty million, four hundred thirty-four thousand, four hundred thirty".