122221001111111 has 8 divisors (see below), whose sum is σ = 139681999915680. Its totient is φ = 104760216253728.

The previous prime is 122221001111087. The next prime is 122221001111159. The reversal of 122221001111111 is 111111100122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122221001111111 - 2²⁶ = 122220934002247 is a prime.

It is a super-2 number, since 2×122221001111111² (a number of 29 digits) contains 22 as substring.

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 122221001111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221001011111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52260776 + ... + 54549341.

It is an arithmetic number, because the mean of its divisors is an integer number (17460249989460).

Almost surely, 2^{122221001111111} is an apocalyptic number.

122221001111111 is a deficient number, since it is larger than the sum of its proper divisors (17460998804569).

122221001111111 is a wasteful number, since it uses less digits than its factorization.

122221001111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106973593.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 122221001111111 its reverse (111111100122221), we get a palindrome (233332101233332).

The spelling of 122221001111111 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one million, one hundred eleven thousand, one hundred eleven".