121000212011211 has 16 divisors (see below), whose sum is σ = 178439675095584. Its totient is φ = 72449191390464.

The previous prime is 121000212011197. The next prime is 121000212011221. The reversal of 121000212011211 is 112110212000121.

It is a happy number.

It is not a de Polignac number, because 121000212011211 - 2⁵ = 121000212011179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121000212011221) 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, 41926613946 + ... + 41926616831.

It is an arithmetic number, because the mean of its divisors is an integer number (11152479693474).

Almost surely, 2^{121000212011211} is an apocalyptic number.

121000212011211 is a deficient number, since it is larger than the sum of its proper divisors (57439463084373).

121000212011211 is a wasteful number, since it uses less digits than its factorization.

121000212011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83853230830.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121000212011211 its reverse (112110212000121), we get a palindrome (233110424011332).

The spelling of 121000212011211 in words is "one hundred twenty-one trillion, two hundred twelve million, eleven thousand, two hundred eleven".