1220213040 has 40 divisors (see below), whose sum is σ = 3782661168. Its totient is φ = 325390080.

The previous prime is 1220213009. The next prime is 1220213053. The reversal of 1220213040 is 403120221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2541871 + ... + 2542350.

Almost surely, 2^1220213040 is an apocalyptic number.

1220213040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220213040 is an abundant number, since it is smaller than the sum of its proper divisors (2562448128).

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

1220213040 is a wasteful number, since it uses less digits than its factorization.

1220213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084237 (or 5084231 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220213040 is about 34931.5479187510. The cubic root of 1220213040 is about 1068.5919231337.

Adding to 1220213040 its reverse (403120221), we get a palindrome (1623333261).

The spelling of 1220213040 in words is "one billion, two hundred twenty million, two hundred thirteen thousand, forty".