1011220434 has 96 divisors (see below), whose sum is σ = 2654985216. Its totient is φ = 272004480.

The previous prime is 1011220421. The next prime is 1011220439. The reversal of 1011220434 is 4340221101.

1011220434 is a `hidden beast` number, since 1 + 0 + 11 + 220 + 434 = 666.

It is a super-2 number, since 2×1011220434² = 2045133532278296712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1011220439) 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 47 ways as a sum of consecutive naturals, for example, 141024 + ... + 148020.

It is an arithmetic number, because the mean of its divisors is an integer number (27656096).

Almost surely, 2^1011220434 is an apocalyptic number.

1011220434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011220434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1327492608).

1011220434 is an abundant number, since it is smaller than the sum of its proper divisors (1643764782).

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

1011220434 is a wasteful number, since it uses less digits than its factorization.

1011220434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080 (or 7077 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1011220434 is about 31799.6923570024. The cubic root of 1011220434 is about 1003.7262425371.

Adding to 1011220434 its reverse (4340221101), we get a palindrome (5351441535).

It can be divided in two parts, 1011 and 220434, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 1011220434 in words is "one billion, eleven million, two hundred twenty thousand, four hundred thirty-four".