1201211269 has 2 divisors, whose sum is σ = 1201211270. Its totient is φ = 1201211268.

The previous prime is 1201211203. The next prime is 1201211273. The reversal of 1201211269 is 9621121021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1013658244 + 187553025 = 31838^2 + 13695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201211269 - 2¹⁷ = 1201080197 is a prime.

It is a super-2 number, since 2×1201211269² = 2885817025545180722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201211069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600605634 + 600605635.

It is an arithmetic number, because the mean of its divisors is an integer number (600605635).

Almost surely, 2^1201211269 is an apocalyptic number.

It is an amenable number.

1201211269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201211269 is an equidigital number, since it uses as much as digits as its factorization.

1201211269 is an evil number, because the sum of its binary digits is even.

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

The square root of 1201211269 is about 34658.4949038472. The cubic root of 1201211269 is about 1063.0159948884.

The spelling of 1201211269 in words is "one billion, two hundred one million, two hundred eleven thousand, two hundred sixty-nine".