121000212211122 has 96 divisors (see below), whose sum is σ = 283442231404800. Its totient is φ = 37175472681984.

The previous prime is 121000212211117. The next prime is 121000212211129. The reversal of 121000212211122 is 221112212000121.

121000212211122 is a `hidden beast` number, since 121 + 0 + 0 + 0 + 212 + 211 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121000212211095 and 121000212211104.

It is not an unprimeable number, because it can be changed into a prime (121000212211129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200733154 + ... + 201335042.

It is an arithmetic number, because the mean of its divisors is an integer number (2952523243800).

Almost surely, 2^{121000212211122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121000212211122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141721115702400).

121000212211122 is an abundant number, since it is smaller than the sum of its proper divisors (162442019193678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121000212211122 is a wasteful number, since it uses less digits than its factorization.

121000212211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617840 (or 617837 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121000212211122 its reverse (221112212000121), we get a palindrome (342112424211243).

The spelling of 121000212211122 in words is "one hundred twenty-one trillion, two hundred twelve million, two hundred eleven thousand, one hundred twenty-two".