1244031401220 has 48 divisors (see below), whose sum is σ = 3483565602048. Its totient is φ = 331715261440.

The previous prime is 1244031401219. The next prime is 1244031401237. The reversal of 1244031401220 is 221041304421.

It is a super-2 number, since 2×1244031401220² (a number of 25 digits) contains 22 as substring.

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, 61644 + ... + 1578563.

It is an arithmetic number, because the mean of its divisors is an integer number (72574283376).

Almost surely, 2^{1244031401220} is an apocalyptic number.

1244031401220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244031401220 is an abundant number, since it is smaller than the sum of its proper divisors (2239534200828).

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

1244031401220 is a wasteful number, since it uses less digits than its factorization.

1244031401220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652860 (or 1652858 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1244031401220 its reverse (221041304421), we get a palindrome (1465072705641).

The spelling of 1244031401220 in words is "one trillion, two hundred forty-four billion, thirty-one million, four hundred one thousand, two hundred twenty".