1224012220040 has 64 divisors (see below), whose sum is σ = 2762188473600. Its totient is φ = 488155719168.

The previous prime is 1224012220033. The next prime is 1224012220063. The reversal of 1224012220040 is 400222104221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1224012219994 and 1224012220021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24232331 + ... + 24282789.

It is an arithmetic number, because the mean of its divisors is an integer number (43159194900).

Almost surely, 2^{1224012220040} is an apocalyptic number.

1224012220040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224012220040 is an abundant number, since it is smaller than the sum of its proper divisors (1538176253560).

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

1224012220040 is a wasteful number, since it uses less digits than its factorization.

1224012220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52254 (or 52250 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 1224012220040 its reverse (400222104221), we get a palindrome (1624234324261).

The spelling of 1224012220040 in words is "one trillion, two hundred twenty-four billion, twelve million, two hundred twenty thousand, forty".