1244223626220 has 72 divisors (see below), whose sum is σ = 3793700260896. Its totient is φ = 330073823232.

The previous prime is 1244223626213. The next prime is 1244223626237. The reversal of 1244223626220 is 226263224421.

1244223626220 is a `hidden beast` number, since 1 + 2 + 4 + 4 + 2 + 2 + 3 + 626 + 2 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17872912 + ... + 17942391.

Almost surely, 2^{1244223626220} is an apocalyptic number.

1244223626220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244223626220 is an abundant number, since it is smaller than the sum of its proper divisors (2549476634676).

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

1244223626220 is a wasteful number, since it uses less digits than its factorization.

1244223626220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35815511 (or 35815506 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 1244223626220 in words is "one trillion, two hundred forty-four billion, two hundred twenty-three million, six hundred twenty-six thousand, two hundred twenty".