12121013010111 has 64 divisors (see below), whose sum is σ = 17525119819776. Its totient is φ = 7429725388800.

The previous prime is 12121013010109. The next prime is 12121013010121. The reversal of 12121013010111 is 11101031012121.

It is not a de Polignac number, because 12121013010111 - 2¹ = 12121013010109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121013010121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1402728351 + ... + 1402736991.

It is an arithmetic number, because the mean of its divisors is an integer number (273829997184).

Almost surely, 2^{12121013010111} is an apocalyptic number.

12121013010111 is a deficient number, since it is larger than the sum of its proper divisors (5404106809665).

12121013010111 is a wasteful number, since it uses less digits than its factorization.

12121013010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 12121013010111 its reverse (11101031012121), we get a palindrome (23222044022232).

The spelling of 12121013010111 in words is "twelve trillion, one hundred twenty-one billion, thirteen million, ten thousand, one hundred eleven".