121102122010121 has 4 divisors (see below), whose sum is σ = 138402425154432. Its totient is φ = 103801818865812.

The previous prime is 121102122010097. The next prime is 121102122010123. The reversal of 121102122010121 is 121010221201121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121102122010121 - 2¹⁸ = 121102121747977 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 121102122010121.

It is not an unprimeable number, because it can be changed into a prime (121102122010123) 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, 8650151572145 + ... + 8650151572158.

It is an arithmetic number, because the mean of its divisors is an integer number (34600606288608).

Almost surely, 2^{121102122010121} is an apocalyptic number.

It is an amenable number.

121102122010121 is a deficient number, since it is larger than the sum of its proper divisors (17300303144311).

121102122010121 is an equidigital number, since it uses as much as digits as its factorization.

121102122010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17300303144310.

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

Adding to 121102122010121 its reverse (121010221201121), we get a palindrome (242112343211242).

The spelling of 121102122010121 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred twenty-two million, ten thousand, one hundred twenty-one".