211213042 has 8 divisors (see below), whose sum is σ = 318837996. Its totient is φ = 104933712.

The previous prime is 211213031. The next prime is 211213043. The reversal of 211213042 is 240312112.

It can be written as a sum of positive squares in 2 ways, for example, as 169494361 + 41718681 = 13019^2 + 6459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211213042² = 89221898221787528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211213043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336013 + ... + 336640.

Almost surely, 2^211213042 is an apocalyptic number.

211213042 is a deficient number, since it is larger than the sum of its proper divisors (107624954).

211213042 is a wasteful number, since it uses less digits than its factorization.

211213042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672812.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 211213042 is about 14533.1704042855. The cubic root of 211213042 is about 595.5344791376.

Adding to 211213042 its reverse (240312112), we get a palindrome (451525154).

The spelling of 211213042 in words is "two hundred eleven million, two hundred thirteen thousand, forty-two".