1228777122 has 32 divisors (see below), whose sum is σ = 2508693120. Its totient is φ = 401098880.

The previous prime is 1228777111. The next prime is 1228777127. The reversal of 1228777122 is 2217778221.

It is not an unprimeable number, because it can be changed into a prime (1228777127) 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, 177547 + ... + 184337.

It is an arithmetic number, because the mean of its divisors is an integer number (78396660).

Almost surely, 2^1228777122 is an apocalyptic number.

1228777122 is an abundant number, since it is smaller than the sum of its proper divisors (1279915998).

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

1228777122 is a wasteful number, since it uses less digits than its factorization.

1228777122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7418.

The product of its digits is 43904, while the sum is 39.

The square root of 1228777122 is about 35053.9173559818. The cubic root of 1228777122 is about 1071.0860728302.

The spelling of 1228777122 in words is "one billion, two hundred twenty-eight million, seven hundred seventy-seven thousand, one hundred twenty-two".