220212011 has 4 divisors (see below), whose sum is σ = 220258800. Its totient is φ = 220165224.

The previous prime is 220211989. The next prime is 220212023. The reversal of 220212011 is 110212022.

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 220212011 - 2¹⁰ = 220210987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220211983 and 220212001.

It is not an unprimeable number, because it can be changed into a prime (220212211) 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, 15431 + ... + 26048.

It is an arithmetic number, because the mean of its divisors is an integer number (55064700).

Almost surely, 2^220212011 is an apocalyptic number.

220212011 is a deficient number, since it is larger than the sum of its proper divisors (46789).

220212011 is an equidigital number, since it uses as much as digits as its factorization.

220212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46788.

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

The square root of 220212011 is about 14839.5421425326. The cubic root of 220212011 is about 603.8749311601.

Adding to 220212011 its sum of digits (11), we get a palindrome (220212022).

Adding to 220212011 its reverse (110212022), we get a palindrome (330424033).

The spelling of 220212011 in words is "two hundred twenty million, two hundred twelve thousand, eleven".