1227120080 has 40 divisors (see below), whose sum is σ = 2855174400. Its totient is φ = 490483328.

The previous prime is 1227120079. The next prime is 1227120091. The reversal of 1227120080 is 800217221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119801 + ... + 129639.

It is an arithmetic number, because the mean of its divisors is an integer number (71379360).

Almost surely, 2^1227120080 is an apocalyptic number.

1227120080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227120080 is an abundant number, since it is smaller than the sum of its proper divisors (1628054320).

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

1227120080 is a wasteful number, since it uses less digits than its factorization.

1227120080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11411 (or 11405 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1227120080 is about 35030.2737642742. The cubic root of 1227120080 is about 1070.6043925807.

The spelling of 1227120080 in words is "one billion, two hundred twenty-seven million, one hundred twenty thousand, eighty".