211213011 has 8 divisors (see below), whose sum is σ = 285820864. Its totient is φ = 138706920.

The previous prime is 211213007. The next prime is 211213021. The reversal of 211213011 is 110312112.

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

It is not a de Polignac number, because 211213011 - 2² = 211213007 is a prime.

It is a super-2 number, since 2×211213011² = 89221872031372242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211213021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525205 + ... + 525606.

It is an arithmetic number, because the mean of its divisors is an integer number (35727608).

Almost surely, 2^211213011 is an apocalyptic number.

211213011 is a deficient number, since it is larger than the sum of its proper divisors (74607853).

211213011 is a wasteful number, since it uses less digits than its factorization.

211213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050881.

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

The square root of 211213011 is about 14533.1693377597. The cubic root of 211213011 is about 595.5344500018.

Adding to 211213011 its reverse (110312112), we get a palindrome (321525123).

The spelling of 211213011 in words is "two hundred eleven million, two hundred thirteen thousand, eleven".