121012010121121 has 4 divisors (see below), whose sum is σ = 138299440138432. Its totient is φ = 103724580103812.

The previous prime is 121012010121097. The next prime is 121012010121161. The reversal of 121012010121121 is 121121010210121.

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 121012010121121 - 2⁵ = 121012010121089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121012010121095 and 121012010121104.

It is not an unprimeable number, because it can be changed into a prime (121012010121161) 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, 8643715008645 + ... + 8643715008658.

It is an arithmetic number, because the mean of its divisors is an integer number (34574860034608).

Almost surely, 2^{121012010121121} is an apocalyptic number.

It is an amenable number.

121012010121121 is a deficient number, since it is larger than the sum of its proper divisors (17287430017311).

121012010121121 is an equidigital number, since it uses as much as digits as its factorization.

121012010121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17287430017310.

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

Adding to 121012010121121 its reverse (121121010210121), we get a palindrome (242133020331242).

The spelling of 121012010121121 in words is "one hundred twenty-one trillion, twelve billion, ten million, one hundred twenty-one thousand, one hundred twenty-one".