121012020202001 has 4 divisors (see below), whose sum is σ = 121023953159604. Its totient is φ = 121000087244400.

The previous prime is 121012020201997. The next prime is 121012020202049. The reversal of 121012020202001 is 100202020210121.

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 67050287603776 + 53961732598225 = 8188424^2 + 7345865^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012020202001 - 2² = 121012020201997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012020202201) 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, 5966463590 + ... + 5966483871.

It is an arithmetic number, because the mean of its divisors is an integer number (30255988289901).

Almost surely, 2^{121012020202001} is an apocalyptic number.

It is an amenable number.

121012020202001 is a deficient number, since it is larger than the sum of its proper divisors (11932957603).

121012020202001 is a wasteful number, since it uses less digits than its factorization.

121012020202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11932957602.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121012020202001 its reverse (100202020210121), we get a palindrome (221214040412122).

The spelling of 121012020202001 in words is "one hundred twenty-one trillion, twelve billion, twenty million, two hundred two thousand, one".