121210120120011 has 64 divisors (see below), whose sum is σ = 189474582398976. Its totient is φ = 68238136627200.

The previous prime is 121210120119967. The next prime is 121210120120051. The reversal of 121210120120011 is 110021021012121.

It is a happy number.

It is not a de Polignac number, because 121210120120011 - 2⁷ = 121210120119883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121210120120051) 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, 860421 + ... + 15593606.

It is an arithmetic number, because the mean of its divisors is an integer number (2960540349984).

Almost surely, 2^{121210120120011} is an apocalyptic number.

121210120120011 is a deficient number, since it is larger than the sum of its proper divisors (68264462278965).

121210120120011 is a wasteful number, since it uses less digits than its factorization.

121210120120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16454372.

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

Adding to 121210120120011 its reverse (110021021012121), we get a palindrome (231231141132132).

The spelling of 121210120120011 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty million, one hundred twenty thousand, eleven".