211011442 has 8 divisors (see below), whose sum is σ = 316585836. Its totient is φ = 105482832.

The previous prime is 211011419. The next prime is 211011467. The reversal of 211011442 is 244110112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 131997121 + 79014321 = 11489^2 + 8889^2 .

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

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, 4548 + ... + 21040.

Almost surely, 2^211011442 is an apocalyptic number.

211011442 is a deficient number, since it is larger than the sum of its proper divisors (105574394).

211011442 is a wasteful number, since it uses less digits than its factorization.

211011442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22892.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 211011442 is about 14526.2328908771. The cubic root of 211011442 is about 595.3449422785.

Adding to 211011442 its reverse (244110112), we get a palindrome (455121554).

The spelling of 211011442 in words is "two hundred eleven million, eleven thousand, four hundred forty-two".