121201210011 has 32 divisors (see below), whose sum is σ = 186171747840. Its totient is φ = 68703485184.

The previous prime is 121201209977. The next prime is 121201210027. The reversal of 121201210011 is 110012102121.

It is not a de Polignac number, because 121201210011 - 2⁶ = 121201209947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121201215011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1270176 + ... + 1362258.

It is an arithmetic number, because the mean of its divisors is an integer number (5817867120).

Almost surely, 2^121201210011 is an apocalyptic number.

121201210011 is a deficient number, since it is larger than the sum of its proper divisors (64970537829).

121201210011 is a wasteful number, since it uses less digits than its factorization.

121201210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92595.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121201210011 its reverse (110012102121), we get a palindrome (231213312132).

The spelling of 121201210011 in words is "one hundred twenty-one billion, two hundred one million, two hundred ten thousand, eleven".