122211011011 has 4 divisors (see below), whose sum is σ = 123143919624. Its totient is φ = 121278102400.

The previous prime is 122211011009. The next prime is 122211011023. The reversal of 122211011011 is 110110112221.

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 122211011011 - 2¹ = 122211011009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122211010982 and 122211011000.

It is not an unprimeable number, because it can be changed into a prime (122211041011) 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, 466454110 + ... + 466454371.

It is an arithmetic number, because the mean of its divisors is an integer number (30785979906).

Almost surely, 2^122211011011 is an apocalyptic number.

122211011011 is a deficient number, since it is larger than the sum of its proper divisors (932908613).

122211011011 is an equidigital number, since it uses as much as digits as its factorization.

122211011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932908612.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122211011011 its reverse (110110112221), we get a palindrome (232321123232).

The spelling of 122211011011 in words is "one hundred twenty-two billion, two hundred eleven million, eleven thousand, eleven".