1220545214 has 24 divisors (see below), whose sum is σ = 2203170840. Its totient is φ = 505052016.

The previous prime is 1220545133. The next prime is 1220545219. The reversal of 1220545214 is 4125450221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220545219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211892 + ... + 217575.

It is an arithmetic number, because the mean of its divisors is an integer number (91798785).

Almost surely, 2^1220545214 is an apocalyptic number.

1220545214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1220545214 is a deficient number, since it is larger than the sum of its proper divisors (982625626).

1220545214 is a wasteful number, since it uses less digits than its factorization.

1220545214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429512 (or 429505 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1220545214 is about 34936.3022370714. The cubic root of 1220545214 is about 1068.6888805876.

Adding to 1220545214 its reverse (4125450221), we get a palindrome (5345995435).

The spelling of 1220545214 in words is "one billion, two hundred twenty million, five hundred forty-five thousand, two hundred fourteen".