12121021102201 has 24 divisors (see below), whose sum is σ = 13824460802880. Its totient is φ = 10538781184800.

The previous prime is 12121021102193. The next prime is 12121021102213. The reversal of 12121021102201 is 10220112012121.

It is not a de Polignac number, because 12121021102201 - 2³ = 12121021102193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121021102241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51316311 + ... + 51551971.

It is an arithmetic number, because the mean of its divisors is an integer number (576019200120).

Almost surely, 2^{12121021102201} is an apocalyptic number.

12121021102201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12121021102201 is a deficient number, since it is larger than the sum of its proper divisors (1703439700679).

12121021102201 is a wasteful number, since it uses less digits than its factorization.

12121021102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244557 (or 244534 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12121021102201 its reverse (10220112012121), we get a palindrome (22341133114322).

The spelling of 12121021102201 in words is "twelve trillion, one hundred twenty-one billion, twenty-one million, one hundred two thousand, two hundred one".