121010220122201 has 4 divisors (see below), whose sum is σ = 121011233820900. Its totient is φ = 121009206423504.

The previous prime is 121010220122153. The next prime is 121010220122227. The reversal of 121010220122201 is 102221022010121.

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 38650529472025 + 82359690650176 = 6216955^2 + 9075224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121010220122201 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 121010220122201.

It is not an unprimeable number, because it can be changed into a prime (121010220124201) 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, 506670266 + ... + 506909043.

It is an arithmetic number, because the mean of its divisors is an integer number (30252808455225).

Almost surely, 2^{121010220122201} is an apocalyptic number.

It is an amenable number.

121010220122201 is a deficient number, since it is larger than the sum of its proper divisors (1013698699).

121010220122201 is a wasteful number, since it uses less digits than its factorization.

121010220122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013698698.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121010220122201 its reverse (102221022010121), we get a palindrome (223231242132322).

The spelling of 121010220122201 in words is "one hundred twenty-one trillion, ten billion, two hundred twenty million, one hundred twenty-two thousand, two hundred one".