1110012121021 has 2 divisors, whose sum is σ = 1110012121022. Its totient is φ = 1110012121020.

The previous prime is 1110012120983. The next prime is 1110012121051. The reversal of 1110012121021 is 1201212100111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1064485364121 + 45526756900 = 1031739^2 + 213370^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110012121021 - 2¹³ = 1110012112829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1110012120992 and 1110012121010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110012121051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555006060510 + 555006060511.

It is an arithmetic number, because the mean of its divisors is an integer number (555006060511).

Almost surely, 2^{1110012121021} is an apocalyptic number.

It is an amenable number.

1110012121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110012121021 is an equidigital number, since it uses as much as digits as its factorization.

1110012121021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1110012121021 its reverse (1201212100111), we get a palindrome (2311224221132).

The spelling of 1110012121021 in words is "one trillion, one hundred ten billion, twelve million, one hundred twenty-one thousand, twenty-one".