1121662280 has 16 divisors (see below), whose sum is σ = 2523740220. Its totient is φ = 448664896.

The previous prime is 1121662279. The next prime is 1121662291. The reversal of 1121662280 is 822661211.

It can be written as a sum of positive squares in 2 ways, for example, as 1007300644 + 114361636 = 31738^2 + 10694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14020739 + ... + 14020818.

Almost surely, 2^1121662280 is an apocalyptic number.

1121662280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121662280 is an abundant number, since it is smaller than the sum of its proper divisors (1402077940).

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

1121662280 is a wasteful number, since it uses less digits than its factorization.

1121662280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28041568 (or 28041564 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1121662280 is about 33491.2269109389. The cubic root of 1121662280 is about 1039.0123389681.

The spelling of 1121662280 in words is "one billion, one hundred twenty-one million, six hundred sixty-two thousand, two hundred eighty".