121011221110122 has 96 divisors (see below), whose sum is σ = 304660687968000. Its totient is φ = 33996491112960.

The previous prime is 121011221110069. The next prime is 121011221110127. The reversal of 121011221110122 is 221011122110121.

It is a happy number.

121011221110122 is a `hidden beast` number, since 1 + 210 + 1 + 1 + 221 + 110 + 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 = 121011221110095 and 121011221110104.

It is not an unprimeable number, because it can be changed into a prime (121011221110127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20425378 + ... + 25675250.

It is an arithmetic number, because the mean of its divisors is an integer number (3173548833000).

Almost surely, 2^{121011221110122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121011221110122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152330343984000).

121011221110122 is an abundant number, since it is smaller than the sum of its proper divisors (183649466857878).

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

121011221110122 is a wasteful number, since it uses less digits than its factorization.

121011221110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252948 (or 5252945 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121011221110122 its reverse (221011122110121), we get a palindrome (342022343220243).

Subtracting 121011221110122 from its reverse (221011122110121), we obtain a palindrome (99999900999999).

The spelling of 121011221110122 in words is "one hundred twenty-one trillion, eleven billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-two".