12101212021101 has 32 divisors (see below), whose sum is σ = 18701821495296. Its totient is φ = 6816796056000.

The previous prime is 12101212021099. The next prime is 12101212021123. The reversal of 12101212021101 is 10112021210121.

It is a happy number.

It is not a de Polignac number, because 12101212021101 - 2¹ = 12101212021099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101212021501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12553131 + ... + 13482711.

It is an arithmetic number, because the mean of its divisors is an integer number (584431921728).

Almost surely, 2^{12101212021101} is an apocalyptic number.

It is an amenable number.

12101212021101 is a deficient number, since it is larger than the sum of its proper divisors (6600609474195).

12101212021101 is an equidigital number, since it uses as much as digits as its factorization.

12101212021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938393.

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

Adding to 12101212021101 its reverse (10112021210121), we get a palindrome (22213233231222).

The spelling of 12101212021101 in words is "twelve trillion, one hundred one billion, two hundred twelve million, twenty-one thousand, one hundred one".