220212122111 has 4 divisors (see below), whose sum is σ = 222482350272. Its totient is φ = 217941893952.

The previous prime is 220212122099. The next prime is 220212122177. The reversal of 220212122111 is 111221212022.

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-220212122111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220212122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212622111) 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, 1135113935 + ... + 1135114128.

It is an arithmetic number, because the mean of its divisors is an integer number (55620587568).

Almost surely, 2^220212122111 is an apocalyptic number.

220212122111 is a deficient number, since it is larger than the sum of its proper divisors (2270228161).

220212122111 is an equidigital number, since it uses as much as digits as its factorization.

220212122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270228160.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220212122111 its reverse (111221212022), we get a palindrome (331433334133).

The spelling of 220212122111 in words is "two hundred twenty billion, two hundred twelve million, one hundred twenty-two thousand, one hundred eleven".