121220110201211 has 16 divisors (see below), whose sum is σ = 140091584168448. Its totient is φ = 102742860292800.

The previous prime is 121220110201193. The next prime is 121220110201301. The reversal of 121220110201211 is 112102011022121.

It is not a de Polignac number, because 121220110201211 - 2⁴⁶ = 50851366023547 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 121220110201211.

It is not an unprimeable number, because it can be changed into a prime (121220110201511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234959495 + ... + 235474848.

It is an arithmetic number, because the mean of its divisors is an integer number (8755724010528).

Almost surely, 2^{121220110201211} is an apocalyptic number.

121220110201211 is a deficient number, since it is larger than the sum of its proper divisors (18871473967237).

121220110201211 is a wasteful number, since it uses less digits than its factorization.

121220110201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470434762.

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

Adding to 121220110201211 its reverse (112102011022121), we get a palindrome (233322121223332).

The spelling of 121220110201211 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred ten million, two hundred one thousand, two hundred eleven".