212215011 has 16 divisors (see below), whose sum is σ = 298944000. Its totient is φ = 133689248.

The previous prime is 212215001. The next prime is 212215013. The reversal of 212215011 is 110512212.

It is a cyclic number.

It is not a de Polignac number, because 212215011 - 2⁵ = 212214979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212215013) 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 15 ways as a sum of consecutive naturals, for example, 21861 + ... + 30038.

It is an arithmetic number, because the mean of its divisors is an integer number (18684000).

Almost surely, 2^212215011 is an apocalyptic number.

212215011 is a deficient number, since it is larger than the sum of its proper divisors (86728989).

212215011 is a wasteful number, since it uses less digits than its factorization.

212215011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51978.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 212215011 is about 14567.6014154699. The cubic root of 212215011 is about 596.4747083191.

Adding to 212215011 its reverse (110512212), we get a palindrome (322727223).

The spelling of 212215011 in words is "two hundred twelve million, two hundred fifteen thousand, eleven".