1021210103 has 2 divisors, whose sum is σ = 1021210104. Its totient is φ = 1021210102.

The previous prime is 1021210079. The next prime is 1021210133. The reversal of 1021210103 is 3010121201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021210103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021210133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510605051 + 510605052.

It is an arithmetic number, because the mean of its divisors is an integer number (510605052).

Almost surely, 2^1021210103 is an apocalyptic number.

1021210103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021210103 is an equidigital number, since it uses as much as digits as its factorization.

1021210103 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 1021210103 is about 31956.3781270657. The cubic root of 1021210103 is about 1007.0206297442.

Adding to 1021210103 its reverse (3010121201), we get a palindrome (4031331304).

The spelling of 1021210103 in words is "one billion, twenty-one million, two hundred ten thousand, one hundred three".