1211825033 has 2 divisors, whose sum is σ = 1211825034. Its totient is φ = 1211825032.

The previous prime is 1211825023. The next prime is 1211825051. The reversal of 1211825033 is 3305281121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 778019449 + 433805584 = 27893^2 + 20828^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211825033 - 2¹⁴ = 1211808649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211824993 and 1211825011.

It is not a weakly prime, because it can be changed into another prime (1211825023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605912516 + 605912517.

It is an arithmetic number, because the mean of its divisors is an integer number (605912517).

Almost surely, 2^1211825033 is an apocalyptic number.

It is an amenable number.

1211825033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211825033 is an equidigital number, since it uses as much as digits as its factorization.

1211825033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1211825033 is about 34811.2773824805. The cubic root of 1211825033 is about 1066.1377139872.

The spelling of 1211825033 in words is "one billion, two hundred eleven million, eight hundred twenty-five thousand, thirty-three".