210220011 has 24 divisors (see below), whose sum is σ = 324543024. Its totient is φ = 130659840.

The previous prime is 210220007. The next prime is 210220019. The reversal of 210220011 is 110022012.

It is not a de Polignac number, because 210220011 - 2² = 210220007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 210219975 and 210220002.

It is not an unprimeable number, because it can be changed into a prime (210220019) 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 23 ways as a sum of consecutive naturals, for example, 9951 + ... + 22791.

It is an arithmetic number, because the mean of its divisors is an integer number (13522626).

Almost surely, 2^210220011 is an apocalyptic number.

210220011 is a deficient number, since it is larger than the sum of its proper divisors (114323013).

210220011 is a wasteful number, since it uses less digits than its factorization.

210220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12971 (or 12968 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 210220011 is about 14498.9658596743. The cubic root of 210220011 is about 594.5996987348.

Adding to 210220011 its reverse (110022012), we get a palindrome (320242023).

The spelling of 210220011 in words is "two hundred ten million, two hundred twenty thousand, eleven".