1110021121021 has 2 divisors, whose sum is σ = 1110021121022. Its totient is φ = 1110021121020.

The previous prime is 1110021120979. The next prime is 1110021121031. The reversal of 1110021121021 is 1201211200111.

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., 1105084512900 + 4936608121 = 1051230^2 + 70261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110021121021 - 2⁷ = 1110021120893 is a prime.

It is a super-2 number, since 2×1110021121021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1110021120992 and 1110021121010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110021121031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555010560510 + 555010560511.

It is an arithmetic number, because the mean of its divisors is an integer number (555010560511).

Almost surely, 2^{1110021121021} is an apocalyptic number.

It is an amenable number.

1110021121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110021121021 is an equidigital number, since it uses as much as digits as its factorization.

1110021121021 is an evil number, because the sum of its binary digits is even.

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

Adding to 1110021121021 its reverse (1201211200111), we get a palindrome (2311232321132).

The spelling of 1110021121021 in words is "one trillion, one hundred ten billion, twenty-one million, one hundred twenty-one thousand, twenty-one".