1101224872 has 24 divisors (see below), whose sum is σ = 2269571850. Its totient is φ = 500556320.

The previous prime is 1101224851. The next prime is 1101224881. The reversal of 1101224872 is 2784221011.

It can be written as a sum of positive squares in only one way, i.e., 826792516 + 274432356 = 28754^2 + 16566^2 .

It is a super-2 number, since 2×1101224872² = 2425392437422832768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101224872.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567847 + ... + 569782.

Almost surely, 2^1101224872 is an apocalyptic number.

It is an amenable number.

1101224872 is an abundant number, since it is smaller than the sum of its proper divisors (1168346978).

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

1101224872 is a wasteful number, since it uses less digits than its factorization.

1101224872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137657 (or 1137642 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 1101224872 is about 33184.7084061319. The cubic root of 1101224872 is about 1032.6631281788.

Adding to 1101224872 its reverse (2784221011), we get a palindrome (3885445883).

The spelling of 1101224872 in words is "one billion, one hundred one million, two hundred twenty-four thousand, eight hundred seventy-two".