1224002131400 has 24 divisors (see below), whose sum is σ = 2845804955970. Its totient is φ = 489600852480.

The previous prime is 1224002131357. The next prime is 1224002131463. The reversal of 1224002131400 is 41312004221.

It can be written as a sum of positive squares in 3 ways, for example, as 461722968004 + 762279163396 = 679502^2 + 873086^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3060005129 + ... + 3060005528.

Almost surely, 2^{1224002131400} is an apocalyptic number.

1224002131400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224002131400 is an abundant number, since it is smaller than the sum of its proper divisors (1621802824570).

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

1224002131400 is a wasteful number, since it uses less digits than its factorization.

1224002131400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120010673 (or 6120010664 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1224002131400 its reverse (41312004221), we get a palindrome (1265314135621).

The spelling of 1224002131400 in words is "one trillion, two hundred twenty-four billion, two million, one hundred thirty-one thousand, four hundred".