1244221240020 has 48 divisors (see below), whose sum is σ = 3800530335168. Its totient is φ = 301629391360.

The previous prime is 1244221240013. The next prime is 1244221240069. The reversal of 1244221240020 is 200421224421.

It is a happy number.

It is a congruent number.

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, 942591189 + ... + 942592508.

It is an arithmetic number, because the mean of its divisors is an integer number (79177715316).

Almost surely, 2^{1244221240020} is an apocalyptic number.

1244221240020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244221240020 is an abundant number, since it is smaller than the sum of its proper divisors (2556309095148).

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

1244221240020 is a wasteful number, since it uses less digits than its factorization.

1244221240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885183720 (or 1885183718 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 1244221240020 its reverse (200421224421), we get a palindrome (1444642464441).

The spelling of 1244221240020 in words is "one trillion, two hundred forty-four billion, two hundred twenty-one million, two hundred forty thousand, twenty".