1001226665472 has 160 divisors (see below), whose sum is σ = 3062964136320. Its totient is φ = 287433400320.

The previous prime is 1001226665419. The next prime is 1001226665479. The reversal of 1001226665472 is 2745666221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001226665479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1238403 + ... + 1880450.

It is an arithmetic number, because the mean of its divisors is an integer number (19143525852).

Almost surely, 2^{1001226665472} is an apocalyptic number.

1001226665472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001226665472 is an abundant number, since it is smaller than the sum of its proper divisors (2061737470848).

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

1001226665472 is a wasteful number, since it uses less digits than its factorization.

1001226665472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118904 (or 3118888 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 1001226665472 in words is "one trillion, one billion, two hundred twenty-six million, six hundred sixty-five thousand, four hundred seventy-two".