212113074 has 16 divisors (see below), whose sum is σ = 446554080. Its totient is φ = 66983040.

The previous prime is 212113073. The next prime is 212113079. The reversal of 212113074 is 470311212.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212113074.

It is not an unprimeable number, because it can be changed into a prime (212113073) 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, 930207 + ... + 930434.

It is an arithmetic number, because the mean of its divisors is an integer number (27909630).

Almost surely, 2^212113074 is an apocalyptic number.

212113074 is an abundant number, since it is smaller than the sum of its proper divisors (234441006).

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

212113074 is a wasteful number, since it uses less digits than its factorization.

212113074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860665.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 212113074 is about 14564.1022380372. The cubic root of 212113074 is about 596.3791879313.

Adding to 212113074 its reverse (470311212), we get a palindrome (682424286).

The spelling of 212113074 in words is "two hundred twelve million, one hundred thirteen thousand, seventy-four".