211120030 has 16 divisors (see below), whose sum is σ = 414563184. Its totient is φ = 76770880.

The previous prime is 211120009. The next prime is 211120033. The reversal of 211120030 is 30021112.

211120030 = 6496² + 6497² + ... + 6500².

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 211119989 and 211120016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959527 + ... + 959746.

It is an arithmetic number, because the mean of its divisors is an integer number (25910199).

Almost surely, 2^211120030 is an apocalyptic number.

211120030 is a deficient number, since it is larger than the sum of its proper divisors (203443154).

211120030 is a wasteful number, since it uses less digits than its factorization.

211120030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919291.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 211120030 is about 14529.9700619100. The cubic root of 211120030 is about 595.4470476901.

Adding to 211120030 its reverse (30021112), we get a palindrome (241141142).

The spelling of 211120030 in words is "two hundred eleven million, one hundred twenty thousand, thirty".