1081081224 has 24 divisors (see below), whose sum is σ = 2927928510. Its totient is φ = 360360384.

The previous prime is 1081081219. The next prime is 1081081229. The reversal of 1081081224 is 4221801801.

It is an interprime number because it is at equal distance from previous prime (1081081219) and next prime (1081081229).

It can be written as a sum of positive squares in only one way, i.e., 873202500 + 207878724 = 29550^2 + 14418^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1081081224² = 2337473225770676352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1081081229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7507437 + ... + 7507580.

Almost surely, 2^1081081224 is an apocalyptic number.

It is an amenable number.

1081081224 is an abundant number, since it is smaller than the sum of its proper divisors (1846847286).

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

1081081224 is a wasteful number, since it uses less digits than its factorization.

1081081224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15015029 (or 15015022 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 1081081224 is about 32879.7996344260. The cubic root of 1081081224 is about 1026.3278365965.

The spelling of 1081081224 in words is "one billion, eighty-one million, eighty-one thousand, two hundred twenty-four".