1220134111 has 8 divisors (see below), whose sum is σ = 1406780064. Its totient is φ = 1036573440.

The previous prime is 1220134093. The next prime is 1220134121. The reversal of 1220134111 is 1114310221.

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

It is not a de Polignac number, because 1220134111 - 2¹⁷ = 1220003039 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 (1220134121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770470 + ... + 772051.

It is an arithmetic number, because the mean of its divisors is an integer number (175847508).

Almost surely, 2^1220134111 is an apocalyptic number.

1220134111 is a deficient number, since it is larger than the sum of its proper divisors (186645953).

1220134111 is a wasteful number, since it uses less digits than its factorization.

1220134111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542641.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1220134111 is about 34930.4181337699. The cubic root of 1220134111 is about 1068.5688821544.

Adding to 1220134111 its reverse (1114310221), we get a palindrome (2334444332).

The spelling of 1220134111 in words is "one billion, two hundred twenty million, one hundred thirty-four thousand, one hundred eleven".