210109012 has 12 divisors (see below), whose sum is σ = 368111520. Its totient is φ = 104934296.

The previous prime is 210109007. The next prime is 210109021. The reversal of 210109012 is 210901012.

It is a super-2 number, since 2×210109012² = 88291593847232288, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

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, 26062 + ... + 33157.

It is an arithmetic number, because the mean of its divisors is an integer number (30675960).

Almost surely, 2^210109012 is an apocalyptic number.

It is an amenable number.

210109012 is a deficient number, since it is larger than the sum of its proper divisors (158002508).

210109012 is a wasteful number, since it uses less digits than its factorization.

210109012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60110 (or 60108 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 210109012 is about 14495.1375295304. The cubic root of 210109012 is about 594.4950280910.

The spelling of 210109012 in words is "two hundred ten million, one hundred nine thousand, twelve".