1211243119 has 2 divisors, whose sum is σ = 1211243120. Its totient is φ = 1211243118.

The previous prime is 1211243107. The next prime is 1211243123. The reversal of 1211243119 is 9113421121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211243119 - 2⁹ = 1211242607 is a prime.

It is a super-2 number, since 2×1211243119² = 2934219786649696322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211243093 and 1211243102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211246119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605621559 + 605621560.

It is an arithmetic number, because the mean of its divisors is an integer number (605621560).

Almost surely, 2^1211243119 is an apocalyptic number.

1211243119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211243119 is an equidigital number, since it uses as much as digits as its factorization.

1211243119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

The square root of 1211243119 is about 34802.9182540775. The cubic root of 1211243119 is about 1065.9670348391.

The spelling of 1211243119 in words is "one billion, two hundred eleven million, two hundred forty-three thousand, one hundred nineteen".