1226712851280 has 480 divisors, whose sum is σ = 4963641306624. Its totient is φ = 265433186304.

The previous prime is 1226712851267. The next prime is 1226712851317. The reversal of 1226712851280 is 821582176221.

1226712851280 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 7 + 128 + 512 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 11189692 + ... + 11298788.

Almost surely, 2^{1226712851280} is an apocalyptic number.

1226712851280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226712851280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2481820653312).

1226712851280 is an abundant number, since it is smaller than the sum of its proper divisors (3736928455344).

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

1226712851280 is a wasteful number, since it uses less digits than its factorization.

1226712851280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109243 (or 109234 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 1226712851280 in words is "one trillion, two hundred twenty-six billion, seven hundred twelve million, eight hundred fifty-one thousand, two hundred eighty".