122111221011 has 64 divisors (see below), whose sum is σ = 191927769600. Its totient is φ = 68377042944.

The previous prime is 122111220989. The next prime is 122111221013. The reversal of 122111221011 is 110122111221.

It is a happy number.

It is not a de Polignac number, because 122111221011 - 2⁷ = 122111220883 is a prime.

It is a super-2 number, since 2×122111221011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122111221013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4132656 + ... + 4162098.

It is an arithmetic number, because the mean of its divisors is an integer number (2998871400).

Almost surely, 2^122111221011 is an apocalyptic number.

122111221011 is a deficient number, since it is larger than the sum of its proper divisors (69816548589).

122111221011 is a wasteful number, since it uses less digits than its factorization.

122111221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29700.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122111221011 its reverse (110122111221), we get a palindrome (232233332232).

The spelling of 122111221011 in words is "one hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, eleven".