1021120103 has 2 divisors, whose sum is σ = 1021120104. Its totient is φ = 1021120102.

The previous prime is 1021120099. The next prime is 1021120159. The reversal of 1021120103 is 3010211201.

It is a weak prime.

It is an emirp because it is prime and its reverse (3010211201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021120103 - 2² = 1021120099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021170103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510560051 + 510560052.

It is an arithmetic number, because the mean of its divisors is an integer number (510560052).

Almost surely, 2^1021120103 is an apocalyptic number.

1021120103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021120103 is an equidigital number, since it uses as much as digits as its factorization.

1021120103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1021120103 is about 31954.9699264449. The cubic root of 1021120103 is about 1006.9910457180.

Adding to 1021120103 its reverse (3010211201), we get a palindrome (4031331304).

The spelling of 1021120103 in words is "one billion, twenty-one million, one hundred twenty thousand, one hundred three".