122121002120111 has 4 divisors (see below), whose sum is σ = 122227102036224. Its totient is φ = 122014902204000.

The previous prime is 122121002120081. The next prime is 122121002120137. The reversal of 122121002120111 is 111021200121221.

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 122121002120111 - 2²² = 122120997925807 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 122121002120111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121002120171) 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, 53049956330 + ... + 53049958631.

It is an arithmetic number, because the mean of its divisors is an integer number (30556775509056).

Almost surely, 2^{122121002120111} is an apocalyptic number.

122121002120111 is a deficient number, since it is larger than the sum of its proper divisors (106099916113).

122121002120111 is a wasteful number, since it uses less digits than its factorization.

122121002120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106099916112.

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

Adding to 122121002120111 its reverse (111021200121221), we get a palindrome (233142202241332).

The spelling of 122121002120111 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two million, one hundred twenty thousand, one hundred eleven".