122111221020011 has 4 divisors (see below), whose sum is σ = 123252447384792. Its totient is φ = 120969994655232.

The previous prime is 122111221019951. The next prime is 122111221020013. The reversal of 122111221020011 is 110020122111221.

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 122111221020011 - 2¹⁴ = 122111221003627 is a prime.

It is a super-2 number, since 2×122111221020011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122111221020013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570613182230 + ... + 570613182443.

It is an arithmetic number, because the mean of its divisors is an integer number (30813111846198).

Almost surely, 2^{122111221020011} is an apocalyptic number.

122111221020011 is a deficient number, since it is larger than the sum of its proper divisors (1141226364781).

122111221020011 is a wasteful number, since it uses less digits than its factorization.

122111221020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141226364780.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 122111221020011 its reverse (110020122111221), we get a palindrome (232131343131232).

The spelling of 122111221020011 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred twenty-one million, twenty thousand, eleven".