1220233413 has 16 divisors (see below), whose sum is σ = 1887157760. Its totient is φ = 686868336.

The previous prime is 1220233393. The next prime is 1220233423. The reversal of 1220233413 is 3143320221.

It is not a de Polignac number, because 1220233413 - 2³⁰ = 146491589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220233413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220233423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432223 + ... + 435036.

It is an arithmetic number, because the mean of its divisors is an integer number (117947360).

Almost surely, 2^1220233413 is an apocalyptic number.

It is an amenable number.

1220233413 is a deficient number, since it is larger than the sum of its proper divisors (666924347).

1220233413 is an equidigital number, since it uses as much as digits as its factorization.

1220233413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867336.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1220233413 is about 34931.8395307204. The cubic root of 1220233413 is about 1068.5978702652.

Adding to 1220233413 its reverse (3143320221), we get a palindrome (4363553634).

The spelling of 1220233413 in words is "one billion, two hundred twenty million, two hundred thirty-three thousand, four hundred thirteen".