1220110311 has 8 divisors (see below), whose sum is σ = 1859215744. Its totient is φ = 697205880.

The previous prime is 1220110291. The next prime is 1220110319. The reversal of 1220110311 is 1130110221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1220110311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220110319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29050225 + ... + 29050266.

It is an arithmetic number, because the mean of its divisors is an integer number (232401968).

Almost surely, 2^1220110311 is an apocalyptic number.

1220110311 is a deficient number, since it is larger than the sum of its proper divisors (639105433).

1220110311 is an equidigital number, since it uses as much as digits as its factorization.

1220110311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58100501.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1220110311 is about 34930.0774548239. The cubic root of 1220110311 is about 1068.5619342556.

Adding to 1220110311 its reverse (1130110221), we get a palindrome (2350220532).

The spelling of 1220110311 in words is "one billion, two hundred twenty million, one hundred ten thousand, three hundred eleven".