1011209970 has 16 divisors (see below), whose sum is σ = 2426904000. Its totient is φ = 269655984.

The previous prime is 1011209939. The next prime is 1011209971. The reversal of 1011209970 is 799021101.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 33706999 = 1011209970 / (1 + 0 + 1 + 1 + 2 + 0 + 9 + 9 + 7 + 0).

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16853470 + ... + 16853529.

It is an arithmetic number, because the mean of its divisors is an integer number (151681500).

Almost surely, 2^1011209970 is an apocalyptic number.

1011209970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011209970 is an abundant number, since it is smaller than the sum of its proper divisors (1415694030).

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

1011209970 is a wasteful number, since it uses less digits than its factorization.

1011209970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33707009.

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 1011209970 is about 31799.5278266832. The cubic root of 1011209970 is about 1003.7227803748.

The spelling of 1011209970 in words is "one billion, eleven million, two hundred nine thousand, nine hundred seventy".