1225124222340 has 96 divisors (see below), whose sum is σ = 3466075705344. Its totient is φ = 323310113280.

The previous prime is 1225124222299. The next prime is 1225124222347. The reversal of 1225124222340 is 432224215221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1225124222298 and 1225124222307.

It is not an unprimeable number, because it can be changed into a prime (1225124222347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2822650 + ... + 3227630.

It is an arithmetic number, because the mean of its divisors is an integer number (36104955264).

Almost surely, 2^{1225124222340} is an apocalyptic number.

1225124222340 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 1225124222340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733037852672).

1225124222340 is an abundant number, since it is smaller than the sum of its proper divisors (2240951483004).

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

1225124222340 is a wasteful number, since it uses less digits than its factorization.

1225124222340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405517 (or 405515 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 1225124222340 its reverse (432224215221), we get a palindrome (1657348437561).

The spelling of 1225124222340 in words is "one trillion, two hundred twenty-five billion, one hundred twenty-four million, two hundred twenty-two thousand, three hundred forty".