211380522 has 16 divisors (see below), whose sum is σ = 422919360. Its totient is φ = 70433792.

The previous prime is 211380467. The next prime is 211380523. The reversal of 211380522 is 225083112.

It is a junction number, because it is equal to n+sod(n) for n = 211380492 and 211380501.

It is not an unprimeable number, because it can be changed into a prime (211380523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17578 + ... + 27050.

It is an arithmetic number, because the mean of its divisors is an integer number (26432460).

Almost surely, 2^211380522 is an apocalyptic number.

211380522 is an abundant number, since it is smaller than the sum of its proper divisors (211538838).

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

211380522 is a wasteful number, since it uses less digits than its factorization.

211380522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13197.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 211380522 is about 14538.9312537064. The cubic root of 211380522 is about 595.6918459404.

The spelling of 211380522 in words is "two hundred eleven million, three hundred eighty thousand, five hundred twenty-two".