1200404023100 has 72 divisors (see below), whose sum is σ = 2653547662080. Its totient is φ = 471217789120.

The previous prime is 1200404023081. The next prime is 1200404023127. The reversal of 1200404023100 is 13204040021.

It is a super-2 number, since 2×1200404023100² (a number of 25 digits) contains 22 as substring.

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, 3289997 + ... + 3636603.

It is an arithmetic number, because the mean of its divisors is an integer number (36854828640).

Almost surely, 2^{1200404023100} is an apocalyptic number.

1200404023100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200404023100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326773831040).

1200404023100 is an abundant number, since it is smaller than the sum of its proper divisors (1453143638980).

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

1200404023100 is a wasteful number, since it uses less digits than its factorization.

1200404023100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347267 (or 347260 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 1200404023100 its reverse (13204040021), we get a palindrome (1213608063121).

The spelling of 1200404023100 in words is "one trillion, two hundred billion, four hundred four million, twenty-three thousand, one hundred".