123030021300 has 72 divisors (see below), whose sum is σ = 356114457216. Its totient is φ = 32794402560.

The previous prime is 123030021277. The next prime is 123030021329. The reversal of 123030021300 is 3120030321.

It is a super-2 number, since 2×123030021300² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123030021300.

It is a congruent number.

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, 650304 + ... + 817896.

It is an arithmetic number, because the mean of its divisors is an integer number (4946034128).

Almost surely, 2^123030021300 is an apocalyptic number.

123030021300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123030021300 is an abundant number, since it is smaller than the sum of its proper divisors (233084435916).

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

123030021300 is a wasteful number, since it uses less digits than its factorization.

123030021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170057 (or 170050 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 123030021300 its reverse (3120030321), we get a palindrome (126150051621).

It can be divided in two parts, 123030021 and 300, that added together give a palindrome (123030321).

The spelling of 123030021300 in words is "one hundred twenty-three billion, thirty million, twenty-one thousand, three hundred".