1211412953 has 2 divisors, whose sum is σ = 1211412954. Its totient is φ = 1211412952.

The previous prime is 1211412941. The next prime is 1211413043. The reversal of 1211412953 is 3592141121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 995528704 + 215884249 = 31552^2 + 14693^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211412953 - 2¹⁴ = 1211396569 is a prime.

It is a super-3 number, since 3×1211412953³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1211412253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605706476 + 605706477.

It is an arithmetic number, because the mean of its divisors is an integer number (605706477).

Almost surely, 2^1211412953 is an apocalyptic number.

It is an amenable number.

1211412953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211412953 is an equidigital number, since it uses as much as digits as its factorization.

1211412953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 1211412953 is about 34805.3581076248. The cubic root of 1211412953 is about 1066.0168539001.

The spelling of 1211412953 in words is "one billion, two hundred eleven million, four hundred twelve thousand, nine hundred fifty-three".