122220111211 has 16 divisors (see below), whose sum is σ = 134678301408. Its totient is φ = 109986912000.

The previous prime is 122220111203. The next prime is 122220111283. The reversal of 122220111211 is 112111022221.

It is a cyclic number.

It is not a de Polignac number, because 122220111211 - 2³ = 122220111203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122220111311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8299591 + ... + 8314303.

It is an arithmetic number, because the mean of its divisors is an integer number (8417393838).

Almost surely, 2^122220111211 is an apocalyptic number.

122220111211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122220111211 is a deficient number, since it is larger than the sum of its proper divisors (12458190197).

122220111211 is a wasteful number, since it uses less digits than its factorization.

122220111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22302.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122220111211 its reverse (112111022221), we get a palindrome (234331133432).

The spelling of 122220111211 in words is "one hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, two hundred eleven".