211120001 has 4 divisors (see below), whose sum is σ = 222231600. Its totient is φ = 200008404.

The previous prime is 211119983. The next prime is 211120003. The reversal of 211120001 is 100021112.

211120001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211120001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211120003) 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, 5555771 + ... + 5555808.

It is an arithmetic number, because the mean of its divisors is an integer number (55557900).

Almost surely, 2^211120001 is an apocalyptic number.

It is an amenable number.

211120001 is a deficient number, since it is larger than the sum of its proper divisors (11111599).

211120001 is a wasteful number, since it uses less digits than its factorization.

211120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111598.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 211120001 is about 14529.9690639726. The cubic root of 211120001 is about 595.4470204261.

Adding to 211120001 its reverse (100021112), we get a palindrome (311141113).

The spelling of 211120001 in words is "two hundred eleven million, one hundred twenty thousand, one".