3122100205400 has 96 divisors (see below), whose sum is σ = 7926842649600. Its totient is φ = 1134153436800.

The previous prime is 3122100205397. The next prime is 3122100205429. The reversal of 3122100205400 is 45020012213.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1440761 + ... + 2884439.

It is an arithmetic number, because the mean of its divisors is an integer number (82571277600).

Almost surely, 2^{3122100205400} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3122100205400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3963421324800).

3122100205400 is an abundant number, since it is smaller than the sum of its proper divisors (4804742444200).

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

3122100205400 is a wasteful number, since it uses less digits than its factorization.

3122100205400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444689 (or 1444680 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 3122100205400 its reverse (45020012213), we get a palindrome (3167120217613).

The spelling of 3122100205400 in words is "three trillion, one hundred twenty-two billion, one hundred million, two hundred five thousand, four hundred".