211212042 has 8 divisors (see below), whose sum is σ = 422424096. Its totient is φ = 70404012.

The previous prime is 211212019. The next prime is 211212091. The reversal of 211212042 is 240212112.

211212042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

211212042 is an admirable number.

It is a super-2 number, since 2×211212042² = 89221053371619528, which contains 22 as substring.

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, 17600998 + ... + 17601009.

It is an arithmetic number, because the mean of its divisors is an integer number (52803012).

Almost surely, 2^211212042 is an apocalyptic number.

211212042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

211212042 is a wasteful number, since it uses less digits than its factorization.

211212042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35202012.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 211212042 is about 14533.1360001894. The cubic root of 211212042 is about 595.5335392723.

Adding to 211212042 its reverse (240212112), we get a palindrome (451424154).

The spelling of 211212042 in words is "two hundred eleven million, two hundred twelve thousand, forty-two".