1222135278880 has 48 divisors (see below), whose sum is σ = 2887697723904. Its totient is φ = 488785857280.

The previous prime is 1222135278869. The next prime is 1222135278883. The reversal of 1222135278880 is 888725312221.

It is a happy number.

It is a super-3 number, since 3×1222135278880³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1222135278883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624129 + ... + 1683391.

It is an arithmetic number, because the mean of its divisors is an integer number (60160369248).

Almost surely, 2^{1222135278880} is an apocalyptic number.

1222135278880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222135278880 is an abundant number, since it is smaller than the sum of its proper divisors (1665562445024).

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

1222135278880 is a wasteful number, since it uses less digits than its factorization.

1222135278880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066489 (or 1066481 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 1222135278880 in words is "one trillion, two hundred twenty-two billion, one hundred thirty-five million, two hundred seventy-eight thousand, eight hundred eighty".