1222451776 has 112 divisors (see below), whose sum is σ = 3161483136. Its totient is φ = 455122944.

The previous prime is 1222451753. The next prime is 1222451803. The reversal of 1222451776 is 6771542221.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92835 + ... + 105181.

It is an arithmetic number, because the mean of its divisors is an integer number (28227528).

Almost surely, 2^1222451776 is an apocalyptic number.

1222451776 is a gapful number since it is divisible by the number (16) 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 1222451776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580741568).

1222451776 is an abundant number, since it is smaller than the sum of its proper divisors (1939031360).

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

1222451776 is a wasteful number, since it uses less digits than its factorization.

1222451776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12396 (or 12386 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 1222451776 is about 34963.5778489559. The cubic root of 1222451776 is about 1069.2450423196.

Adding to 1222451776 its reverse (6771542221), we get a palindrome (7993993997).

It can be divided in two parts, 12224 and 51776, that added together give a cube (64000 = 40³).

The spelling of 1222451776 in words is "one billion, two hundred twenty-two million, four hundred fifty-one thousand, seven hundred seventy-six".