1221225054 has 16 divisors (see below), whose sum is σ = 2791371648. Its totient is φ = 348921432.

The previous prime is 1221225041. The next prime is 1221225077. The reversal of 1221225054 is 4505221221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14538352 + ... + 14538435.

It is an arithmetic number, because the mean of its divisors is an integer number (174460728).

Almost surely, 2^1221225054 is an apocalyptic number.

1221225054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1221225054 is an abundant number, since it is smaller than the sum of its proper divisors (1570146594).

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

1221225054 is a wasteful number, since it uses less digits than its factorization.

1221225054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29076799.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1221225054 is about 34946.0305900398. The cubic root of 1221225054 is about 1068.8872625864.

Adding to 1221225054 its reverse (4505221221), we get a palindrome (5726446275).

The spelling of 1221225054 in words is "one billion, two hundred twenty-one million, two hundred twenty-five thousand, fifty-four".