213021074 has 16 divisors (see below), whose sum is σ = 365472000. Its totient is φ = 91221504.

The previous prime is 213021071. The next prime is 213021079. The reversal of 213021074 is 470120312.

It is a super-2 number, since 2×213021074² = 90755955936226952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14327 + ... + 25125.

It is an arithmetic number, because the mean of its divisors is an integer number (22842000).

Almost surely, 2^213021074 is an apocalyptic number.

213021074 is a deficient number, since it is larger than the sum of its proper divisors (152450926).

213021074 is a wasteful number, since it uses less digits than its factorization.

213021074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12217.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 213021074 is about 14595.2414848128. The cubic root of 213021074 is about 597.2289570890.

Adding to 213021074 its reverse (470120312), we get a palindrome (683141386).

The spelling of 213021074 in words is "two hundred thirteen million, twenty-one thousand, seventy-four".