212202011 has 4 divisors (see below), whose sum is σ = 242516592. Its totient is φ = 181887432.

The previous prime is 212201989. The next prime is 212202017. The reversal of 212202011 is 110202212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212202011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212201983 and 212202001.

It is not an unprimeable number, because it can be changed into a prime (212202017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15157280 + ... + 15157293.

It is an arithmetic number, because the mean of its divisors is an integer number (60629148).

Almost surely, 2^212202011 is an apocalyptic number.

212202011 is a deficient number, since it is larger than the sum of its proper divisors (30314581).

212202011 is an equidigital number, since it uses as much as digits as its factorization.

212202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30314580.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 212202011 is about 14567.1552130126. The cubic root of 212202011 is about 596.4625283300.

Adding to 212202011 its reverse (110202212), we get a palindrome (322404223).

The spelling of 212202011 in words is "two hundred twelve million, two hundred two thousand, eleven".