12121101022101 has 4 divisors (see below), whose sum is σ = 16161468029472. Its totient is φ = 8080734014732.

The previous prime is 12121101022091. The next prime is 12121101022111. The reversal of 12121101022101 is 10122010112121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12121101022091) and next prime (12121101022111).

It is a cyclic number.

It is not a de Polignac number, because 12121101022101 - 2³⁵ = 12086741283733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121101022111) 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, 2020183503681 + ... + 2020183503686.

It is an arithmetic number, because the mean of its divisors is an integer number (4040367007368).

Almost surely, 2^{12121101022101} is an apocalyptic number.

It is an amenable number.

12121101022101 is a deficient number, since it is larger than the sum of its proper divisors (4040367007371).

12121101022101 is an equidigital number, since it uses as much as digits as its factorization.

12121101022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040367007370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12121101022101 its reverse (10122010112121), we get a palindrome (22243111134222).

The spelling of 12121101022101 in words is "twelve trillion, one hundred twenty-one billion, one hundred one million, twenty-two thousand, one hundred one".