110121121221 has 16 divisors (see below), whose sum is σ = 156070053504. Its totient is φ = 68826742784.

The previous prime is 110121121193. The next prime is 110121121267. The reversal of 110121121221 is 122121121011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 110121121221 - 2¹³ = 110121113029 is a prime.

It is a super-2 number, since 2×110121121221² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 110121121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121121321) 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, 4187745 + ... + 4213958.

It is an arithmetic number, because the mean of its divisors is an integer number (9754378344).

Almost surely, 2^110121121221 is an apocalyptic number.

It is an amenable number.

110121121221 is a deficient number, since it is larger than the sum of its proper divisors (45948932283).

110121121221 is a wasteful number, since it uses less digits than its factorization.

110121121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8401980.

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

Adding to 110121121221 its reverse (122121121011), we get a palindrome (232242242232).

The spelling of 110121121221 in words is "one hundred ten billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-one".