123421355330 has 48 divisors (see below), whose sum is σ = 278308389240. Its totient is φ = 39060822528.

The previous prime is 123421355269. The next prime is 123421355353. The reversal of 123421355330 is 33553124321.

It can be written as a sum of positive squares in 4 ways, for example, as 74464040161 + 48957315169 = 272881^2 + 221263^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9681335 + ... + 9694074.

Almost surely, 2^123421355330 is an apocalyptic number.

123421355330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123421355330 is an abundant number, since it is smaller than the sum of its proper divisors (154887033910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123421355330 is a wasteful number, since it uses less digits than its factorization.

123421355330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19375443 (or 19375436 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 123421355330 its reverse (33553124321), we get a palindrome (156974479651).

The spelling of 123421355330 in words is "one hundred twenty-three billion, four hundred twenty-one million, three hundred fifty-five thousand, three hundred thirty".