1244100405021 has 8 divisors (see below), whose sum is σ = 1661229240480. Its totient is φ = 828185919792.

The previous prime is 1244100405017. The next prime is 1244100405049. The reversal of 1244100405021 is 1205040014421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1244100405021 - 2² = 1244100405017 is a prime.

It is a super-3 number, since 3×1244100405021³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1244100404982 and 1244100405000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244100405221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303585166 + ... + 303589263.

It is an arithmetic number, because the mean of its divisors is an integer number (207653655060).

Almost surely, 2^{1244100405021} is an apocalyptic number.

It is an amenable number.

1244100405021 is a deficient number, since it is larger than the sum of its proper divisors (417128835459).

1244100405021 is an equidigital number, since it uses as much as digits as its factorization.

1244100405021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607175115.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 1244100405021 its reverse (1205040014421), we get a palindrome (2449140419442).

The spelling of 1244100405021 in words is "one trillion, two hundred forty-four billion, one hundred million, four hundred five thousand, twenty-one".