1135221440 has 28 divisors (see below), whose sum is σ = 2703246816. Its totient is φ = 454088448.

The previous prime is 1135221431. The next prime is 1135221449. The reversal of 1135221440 is 441225311.

It is an interprime number because it is at equal distance from previous prime (1135221431) and next prime (1135221449).

It is not an unprimeable number, because it can be changed into a prime (1135221449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1773464 + ... + 1774103.

Almost surely, 2^1135221440 is an apocalyptic number.

1135221440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1135221440 is an abundant number, since it is smaller than the sum of its proper divisors (1568025376).

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

1135221440 is an equidigital number, since it uses as much as digits as its factorization.

1135221440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547584 (or 3547574 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1135221440 is about 33693.0473540165. The cubic root of 1135221440 is about 1043.1822645874.

Adding to 1135221440 its reverse (441225311), we get a palindrome (1576446751).

The spelling of 1135221440 in words is "one billion, one hundred thirty-five million, two hundred twenty-one thousand, four hundred forty".