1111021103 has 2 divisors, whose sum is σ = 1111021104. Its totient is φ = 1111021102.

The previous prime is 1111021099. The next prime is 1111021127. The reversal of 1111021103 is 3011201111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111021103 - 2² = 1111021099 is a prime.

It is a super-2 number, since 2×1111021103² = 2468735782622673218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111020103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555510551 + 555510552.

It is an arithmetic number, because the mean of its divisors is an integer number (555510552).

Almost surely, 2^1111021103 is an apocalyptic number.

1111021103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111021103 is an equidigital number, since it uses as much as digits as its factorization.

1111021103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1111021103 is about 33331.9831843231. The cubic root of 1111021103 is about 1035.7162002832.

Adding to 1111021103 its reverse (3011201111), we get a palindrome (4122222214).

The spelling of 1111021103 in words is "one billion, one hundred eleven million, twenty-one thousand, one hundred three".