122121001121111 has 8 divisors (see below), whose sum is σ = 125168729303040. Its totient is φ = 119105868962808.

The previous prime is 122121001121059. The next prime is 122121001121113. The reversal of 122121001121111 is 111121100121221.

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

It is a cyclic number.

It is not a de Polignac number, because 122121001121111 - 2³⁴ = 122103821251927 is a prime.

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 122121001121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121001121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8148998321 + ... + 8149013306.

It is an arithmetic number, because the mean of its divisors is an integer number (15646091162880).

Almost surely, 2^{122121001121111} is an apocalyptic number.

122121001121111 is a deficient number, since it is larger than the sum of its proper divisors (3047728181929).

122121001121111 is a wasteful number, since it uses less digits than its factorization.

122121001121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16298011813.

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

Adding to 122121001121111 its reverse (111121100121221), we get a palindrome (233242101242332).

The spelling of 122121001121111 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, one million, one hundred twenty-one thousand, one hundred eleven".