12121102012011 has 16 divisors (see below), whose sum is σ = 16251769716000. Its totient is φ = 8035590044160.

The previous prime is 12121102011989. The next prime is 12121102012027. The reversal of 12121102012011 is 11021020112121.

It is a happy number.

It is not a de Polignac number, because 12121102012011 - 2⁶ = 12121102011947 is a prime.

It is a super-2 number, since 2×12121102012011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12121102022011) 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, 8150365 + ... + 9522113.

It is an arithmetic number, because the mean of its divisors is an integer number (1015735607250).

Almost surely, 2^{12121102012011} is an apocalyptic number.

12121102012011 is a deficient number, since it is larger than the sum of its proper divisors (4130667703989).

12121102012011 is a wasteful number, since it uses less digits than its factorization.

12121102012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388206.

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

Adding to 12121102012011 its reverse (11021020112121), we get a palindrome (23142122124132).

The spelling of 12121102012011 in words is "twelve trillion, one hundred twenty-one billion, one hundred two million, twelve thousand, eleven".