1211010103 has 2 divisors, whose sum is σ = 1211010104. Its totient is φ = 1211010102.

The previous prime is 1211010077. The next prime is 1211010121. The reversal of 1211010103 is 3010101121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211010103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211010103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211010173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605505051 + 605505052.

It is an arithmetic number, because the mean of its divisors is an integer number (605505052).

Almost surely, 2^1211010103 is an apocalyptic number.

1211010103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211010103 is an equidigital number, since it uses as much as digits as its factorization.

1211010103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1211010103 is about 34799.5704427512. The cubic root of 1211010103 is about 1065.8986744082.

Adding to 1211010103 its reverse (3010101121), we get a palindrome (4221111224).

The spelling of 1211010103 in words is "one billion, two hundred eleven million, ten thousand, one hundred three".