1211400103 has 2 divisors, whose sum is σ = 1211400104. Its totient is φ = 1211400102.

The previous prime is 1211400077. The next prime is 1211400139. The reversal of 1211400103 is 3010041121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211400103 - 2²¹ = 1209302951 is a prime.

It is a super-3 number, since 3×1211400103³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211400173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605700051 + 605700052.

It is an arithmetic number, because the mean of its divisors is an integer number (605700052).

Almost surely, 2^1211400103 is an apocalyptic number.

1211400103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211400103 is an equidigital number, since it uses as much as digits as its factorization.

1211400103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1211400103 is about 34805.1735091207. The cubic root of 1211400103 is about 1066.0130846473.

Adding to 1211400103 its reverse (3010041121), we get a palindrome (4221441224).

The spelling of 1211400103 in words is "one billion, two hundred eleven million, four hundred thousand, one hundred three".