1110010121221 has 4 divisors (see below), whose sum is σ = 1175304834252. Its totient is φ = 1044715408192.

The previous prime is 1110010121203. The next prime is 1110010121243. The reversal of 1110010121221 is 1221210100111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 982796632321 + 127213488900 = 991361^2 + 356670^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110010121221 - 2²⁵ = 1109976566789 is a prime.

It is a super-2 number, since 2×1110010121221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110010125221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32647356490 + ... + 32647356523.

It is an arithmetic number, because the mean of its divisors is an integer number (293826208563).

Almost surely, 2^{1110010121221} is an apocalyptic number.

It is an amenable number.

1110010121221 is a deficient number, since it is larger than the sum of its proper divisors (65294713031).

1110010121221 is an equidigital number, since it uses as much as digits as its factorization.

1110010121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65294713030.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1110010121221 its reverse (1221210100111), we get a palindrome (2331220221332).

The spelling of 1110010121221 in words is "one trillion, one hundred ten billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".