1201211783 has 2 divisors, whose sum is σ = 1201211784. Its totient is φ = 1201211782.

The previous prime is 1201211779. The next prime is 1201211821. The reversal of 1201211783 is 3871121021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201211783 - 2² = 1201211779 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201211723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600605891 + 600605892.

It is an arithmetic number, because the mean of its divisors is an integer number (600605892).

Almost surely, 2^1201211783 is an apocalyptic number.

1201211783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201211783 is an equidigital number, since it uses as much as digits as its factorization.

1201211783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 1201211783 is about 34658.5023190559. The cubic root of 1201211783 is about 1063.0161465104.

The spelling of 1201211783 in words is "one billion, two hundred one million, two hundred eleven thousand, seven hundred eighty-three".