212220212011 has 4 divisors (see below), whose sum is σ = 224703753912. Its totient is φ = 199736670112.

The previous prime is 212220211993. The next prime is 212220212023. The reversal of 212220212011 is 110212022212.

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 212220212011 - 2¹¹ = 212220209963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212220212311) 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, 6241770925 + ... + 6241770958.

It is an arithmetic number, because the mean of its divisors is an integer number (56175938478).

Almost surely, 2^212220212011 is an apocalyptic number.

212220212011 is a deficient number, since it is larger than the sum of its proper divisors (12483541901).

212220212011 is a wasteful number, since it uses less digits than its factorization.

212220212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12483541900.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212220212011 its reverse (110212022212), we get a palindrome (322432234223).

The spelling of 212220212011 in words is "two hundred twelve billion, two hundred twenty million, two hundred twelve thousand, eleven".