12011121210101 has 16 divisors (see below), whose sum is σ = 12942570583488. Its totient is φ = 11080747641600.

The previous prime is 12011121210097. The next prime is 12011121210113. The reversal of 12011121210101 is 10101212111021.

It is not a de Polignac number, because 12011121210101 - 2² = 12011121210097 is a prime.

It is a super-2 number, since 2×12011121210101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011121210001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161713565 + ... + 161787821.

It is an arithmetic number, because the mean of its divisors is an integer number (808910661468).

Almost surely, 2^{12011121210101} is an apocalyptic number.

It is an amenable number.

12011121210101 is a deficient number, since it is larger than the sum of its proper divisors (931449373387).

12011121210101 is a wasteful number, since it uses less digits than its factorization.

12011121210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81332.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12011121210101 its reverse (10101212111021), we get a palindrome (22112333321122).

The spelling of 12011121210101 in words is "twelve trillion, eleven billion, one hundred twenty-one million, two hundred ten thousand, one hundred one".