121120100122121 has 16 divisors (see below), whose sum is σ = 121894581611520. Its totient is φ = 120346496840640.

The previous prime is 121120100122069. The next prime is 121120100122123. The reversal of 121120100122121 is 121221001021121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121120100122121 is a prime.

It is a super-2 number, since 2×121120100122121² (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 121120100122121.

It is not an unprimeable number, because it can be changed into a prime (121120100122123) 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 15 ways as a sum of consecutive naturals, for example, 1974442376 + ... + 1974503718.

It is an arithmetic number, because the mean of its divisors is an integer number (7618411350720).

Almost surely, 2^{121120100122121} is an apocalyptic number.

It is an amenable number.

121120100122121 is a deficient number, since it is larger than the sum of its proper divisors (774481489399).

121120100122121 is a wasteful number, since it uses less digits than its factorization.

121120100122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68296.

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

Adding to 121120100122121 its reverse (121221001021121), we get a palindrome (242341101143242).

The spelling of 121120100122121 in words is "one hundred twenty-one trillion, one hundred twenty billion, one hundred million, one hundred twenty-two thousand, one hundred twenty-one".