121200121120211 has 32 divisors (see below), whose sum is σ = 146111200665600. Its totient is φ = 98211381202080.

The previous prime is 121200121120181. The next prime is 121200121120277. The reversal of 121200121120211 is 112021121002121.

It is a cyclic number.

It is not a de Polignac number, because 121200121120211 - 2⁴⁶ = 50831376942547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121200121120211.

It is not an unprimeable number, because it can be changed into a prime (121200121126211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169483796 + ... + 170197406.

It is an arithmetic number, because the mean of its divisors is an integer number (4565975020800).

Almost surely, 2^{121200121120211} is an apocalyptic number.

121200121120211 is a deficient number, since it is larger than the sum of its proper divisors (24911079545389).

121200121120211 is a wasteful number, since it uses less digits than its factorization.

121200121120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716319.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121200121120211 its reverse (112021121002121), we get a palindrome (233221242122332).

The spelling of 121200121120211 in words is "one hundred twenty-one trillion, two hundred billion, one hundred twenty-one million, one hundred twenty thousand, two hundred eleven".