1220950550 has 24 divisors (see below), whose sum is σ = 2302084056. Its totient is φ = 481688640.

The previous prime is 1220950541. The next prime is 1220950553. The reversal of 1220950550 is 550590221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220950553) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 163604 + ... + 170903.

It is an arithmetic number, because the mean of its divisors is an integer number (95920169).

Almost surely, 2^1220950550 is an apocalyptic number.

1220950550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220950550 is a deficient number, since it is larger than the sum of its proper divisors (1081133506).

1220950550 is a wasteful number, since it uses less digits than its factorization.

1220950550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334592 (or 334587 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1220950550 is about 34942.1028273915. The cubic root of 1220950550 is about 1068.8071692912.

The spelling of 1220950550 in words is "one billion, two hundred twenty million, nine hundred fifty thousand, five hundred fifty".