121400234211 has 16 divisors (see below), whose sum is σ = 165171031040. Its totient is φ = 79296148800.

The previous prime is 121400234203. The next prime is 121400234227. The reversal of 121400234211 is 112432004121.

It is not a de Polignac number, because 121400234211 - 2³ = 121400234203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121400234201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1802491 + ... + 1868628.

It is an arithmetic number, because the mean of its divisors is an integer number (10323189440).

Almost surely, 2^121400234211 is an apocalyptic number.

121400234211 is a deficient number, since it is larger than the sum of its proper divisors (43770796829).

121400234211 is a wasteful number, since it uses less digits than its factorization.

121400234211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671346.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121400234211 its reverse (112432004121), we get a palindrome (233832238332).

The spelling of 121400234211 in words is "one hundred twenty-one billion, four hundred million, two hundred thirty-four thousand, two hundred eleven".