121021011101201 has 4 divisors (see below), whose sum is σ = 128139894107172. Its totient is φ = 113902128095232.

The previous prime is 121021011101173. The next prime is 121021011101203. The reversal of 121021011101201 is 102101110120121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47578596380176 + 73442414721025 = 6897724^2 + 8569855^2 .

It is a cyclic number.

It is not a de Polignac number, because 121021011101201 - 2²² = 121021006906897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121021011101203) 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, 3559441502960 + ... + 3559441502993.

It is an arithmetic number, because the mean of its divisors is an integer number (32034973526793).

Almost surely, 2^{121021011101201} is an apocalyptic number.

It is an amenable number.

121021011101201 is a deficient number, since it is larger than the sum of its proper divisors (7118883005971).

121021011101201 is an equidigital number, since it uses as much as digits as its factorization.

121021011101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7118883005970.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121021011101201 its reverse (102101110120121), we get a palindrome (223122121221322).

The spelling of 121021011101201 in words is "one hundred twenty-one trillion, twenty-one billion, eleven million, one hundred one thousand, two hundred one".