1071218900 has 18 divisors (see below), whose sum is σ = 2324545230. Its totient is φ = 428487520.

The previous prime is 1071218873. The next prime is 1071218903. The reversal of 1071218900 is 98121701.

It can be written as a sum of positive squares in 3 ways, for example, as 19254544 + 1051964356 = 4388^2 + 32434^2 .

It is a super-2 number, since 2×1071218900² = 2295019863434420000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071218903) 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, 5355995 + ... + 5356194.

Almost surely, 2^1071218900 is an apocalyptic number.

1071218900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1071218900 is an abundant number, since it is smaller than the sum of its proper divisors (1253326330).

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

1071218900 is a wasteful number, since it uses less digits than its factorization.

1071218900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10712203 (or 10712196 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 1071218900 is about 32729.4805947177. The cubic root of 1071218900 is about 1023.1973550845.

The spelling of 1071218900 in words is "one billion, seventy-one million, two hundred eighteen thousand, nine hundred".