121012110000221 has 4 divisors (see below), whose sum is σ = 132013210909344. Its totient is φ = 110011009091100.

The previous prime is 121012110000211. The next prime is 121012110000253. The reversal of 121012110000221 is 122000011210121.

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 121012110000221 - 2⁴⁶ = 50643365822557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121012110000196 and 121012110000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012110000211) 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 3 ways as a sum of consecutive naturals, for example, 5500550454545 + ... + 5500550454566.

It is an arithmetic number, because the mean of its divisors is an integer number (33003302727336).

Almost surely, 2^{121012110000221} is an apocalyptic number.

121012110000221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121012110000221 is a deficient number, since it is larger than the sum of its proper divisors (11001100909123).

121012110000221 is a wasteful number, since it uses less digits than its factorization.

121012110000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001100909122.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121012110000221 its reverse (122000011210121), we get a palindrome (243012121210342).

The spelling of 121012110000221 in words is "one hundred twenty-one trillion, twelve billion, one hundred ten million, two hundred twenty-one", and thus it is an aban number.