212231011 has 2 divisors, whose sum is σ = 212231012. Its totient is φ = 212231010.

The previous prime is 212231003. The next prime is 212231023. The reversal of 212231011 is 110132212.

212231011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212231011 - 2³ = 212231003 is a prime.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 212230982 and 212231000.

It is not a weakly prime, because it can be changed into another prime (212231081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115505 + 106115506.

It is an arithmetic number, because the mean of its divisors is an integer number (106115506).

Almost surely, 2^212231011 is an apocalyptic number.

212231011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212231011 is an equidigital number, since it uses as much as digits as its factorization.

212231011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 212231011 is about 14568.1505689638. The cubic root of 212231011 is about 596.4896983921.

Adding to 212231011 its reverse (110132212), we get a palindrome (322363223).

It can be divided in two parts, 2122 and 31011, that added together give a palindrome (33133).

The spelling of 212231011 in words is "two hundred twelve million, two hundred thirty-one thousand, eleven".