12121011211103 has 16 divisors (see below), whose sum is σ = 12439570454976. Its totient is φ = 11803548303360.

The previous prime is 12121011211039. The next prime is 12121011211117. The reversal of 12121011211103 is 30111211012121.

It is a cyclic number.

It is not a de Polignac number, because 12121011211103 - 2⁶ = 12121011211039 is a prime.

It is a super-2 number, since 2×12121011211103² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121011211003) 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, 257908775 + ... + 257955767.

It is an arithmetic number, because the mean of its divisors is an integer number (777473153436).

Almost surely, 2^{12121011211103} is an apocalyptic number.

12121011211103 is a deficient number, since it is larger than the sum of its proper divisors (318559243873).

12121011211103 is a wasteful number, since it uses less digits than its factorization.

12121011211103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58514.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 12121011211103 its reverse (30111211012121), we get a palindrome (42232222223224).

The spelling of 12121011211103 in words is "twelve trillion, one hundred twenty-one billion, eleven million, two hundred eleven thousand, one hundred three".