1220935411 has 4 divisors (see below), whose sum is σ = 1233522472. Its totient is φ = 1208348352.

The previous prime is 1220935337. The next prime is 1220935447. The reversal of 1220935411 is 1145390221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1145390221 = 73 ⋅15690277.

It is a cyclic number.

It is not a de Polignac number, because 1220935411 - 2⁹ = 1220934899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220935411.

It is not an unprimeable number, because it can be changed into a prime (1220935451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6293385 + ... + 6293578.

It is an arithmetic number, because the mean of its divisors is an integer number (308380618).

Almost surely, 2^1220935411 is an apocalyptic number.

1220935411 is a deficient number, since it is larger than the sum of its proper divisors (12587061).

1220935411 is an equidigital number, since it uses as much as digits as its factorization.

1220935411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12587060.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1220935411 is about 34941.8861969413. The cubic root of 1220935411 is about 1068.8027517662.

The spelling of 1220935411 in words is "one billion, two hundred twenty million, nine hundred thirty-five thousand, four hundred eleven".