12111001010101 has 8 divisors (see below), whose sum is σ = 13847833802880. Its totient is φ = 10375840665168.

The previous prime is 12111001010081. The next prime is 12111001010131. The reversal of 12111001010101 is 10101010011121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111001010101 - 2⁷ = 12111001009973 is a prime.

12111001010101 is a modest number, since divided by 1010101 gives 121110 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111001010131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418096441 + ... + 418125406.

It is an arithmetic number, because the mean of its divisors is an integer number (1730979225360).

Almost surely, 2^{12111001010101} is an apocalyptic number.

It is an amenable number.

12111001010101 is a deficient number, since it is larger than the sum of its proper divisors (1736832792779).

12111001010101 is an equidigital number, since it uses as much as digits as its factorization.

12111001010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836223923.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 12111001010101 its reverse (10101010011121), we get a palindrome (22212011021222).

The spelling of 12111001010101 in words is "twelve trillion, one hundred eleven billion, one million, ten thousand, one hundred one".