212022011 has 4 divisors (see below), whose sum is σ = 224493912. Its totient is φ = 199550112.

The previous prime is 212021993. The next prime is 212022023. The reversal of 212022011 is 110220212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212022011 - 2¹⁰ = 212020987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021983 and 212022001.

It is not an unprimeable number, because it can be changed into a prime (212022071) 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, 6235925 + ... + 6235958.

It is an arithmetic number, because the mean of its divisors is an integer number (56123478).

Almost surely, 2^212022011 is an apocalyptic number.

212022011 is a deficient number, since it is larger than the sum of its proper divisors (12471901).

212022011 is a wasteful number, since it uses less digits than its factorization.

212022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471900.

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

The square root of 212022011 is about 14560.9756197859. The cubic root of 212022011 is about 596.2938311755.

Adding to 212022011 its reverse (110220212), we get a palindrome (322242223).

The spelling of 212022011 in words is "two hundred twelve million, twenty-two thousand, eleven".