1011209975 has 12 divisors (see below), whose sum is σ = 1258903800. Its totient is φ = 805740000.

The previous prime is 1011209971. The next prime is 1011210023. The reversal of 1011209975 is 5799021101.

It is not a de Polignac number, because 1011209975 - 2² = 1011209971 is a prime.

It is a super-2 number, since 2×1011209975² = 2045091227079001250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011209971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74300 + ... + 86849.

It is an arithmetic number, because the mean of its divisors is an integer number (104908650).

Almost surely, 2^1011209975 is an apocalyptic number.

1011209975 is a deficient number, since it is larger than the sum of its proper divisors (247693825).

1011209975 is a wasteful number, since it uses less digits than its factorization.

1011209975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161410 (or 161405 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 35.

The square root of 1011209975 is about 31799.5279053007. The cubic root of 1011209975 is about 1003.7227820292.

The spelling of 1011209975 in words is "one billion, eleven million, two hundred nine thousand, nine hundred seventy-five".