121002001020201 has 12 divisors (see below), whose sum is σ = 187676573011152. Its totient is φ = 69144000582888.

The previous prime is 121002001020191. The next prime is 121002001020223. The reversal of 121002001020201 is 102020100200121.

It is not a de Polignac number, because 121002001020201 - 2¹⁰ = 121002001019177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121002001040201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411571431895 + ... + 411571432188.

It is an arithmetic number, because the mean of its divisors is an integer number (15639714417596).

Almost surely, 2^{121002001020201} is an apocalyptic number.

It is an amenable number.

121002001020201 is a deficient number, since it is larger than the sum of its proper divisors (66674571990951).

121002001020201 is an equidigital number, since it uses as much as digits as its factorization.

121002001020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823142864100 (or 823142864093 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121002001020201 its reverse (102020100200121), we get a palindrome (223022101220322).

The spelling of 121002001020201 in words is "one hundred twenty-one trillion, two billion, one million, twenty thousand, two hundred one".