121200202011 has 16 divisors (see below), whose sum is σ = 184778290944. Its totient is φ = 69222657504.

The previous prime is 121200202009. The next prime is 121200202021. The reversal of 121200202011 is 110202002121.

It is not a de Polignac number, because 121200202011 - 2¹ = 121200202009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121200202021) 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, 1398636 + ... + 1482761.

It is an arithmetic number, because the mean of its divisors is an integer number (11548643184).

Almost surely, 2^121200202011 is an apocalyptic number.

121200202011 is a deficient number, since it is larger than the sum of its proper divisors (63578088933).

121200202011 is a wasteful number, since it uses less digits than its factorization.

121200202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121200202011 its reverse (110202002121), we get a palindrome (231402204132).

The spelling of 121200202011 in words is "one hundred twenty-one billion, two hundred million, two hundred two thousand, eleven".