1201011012511 has 2 divisors, whose sum is σ = 1201011012512. Its totient is φ = 1201011012510.

The previous prime is 1201011012497. The next prime is 1201011012529. The reversal of 1201011012511 is 1152101101021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201011012511 - 2¹⁷ = 1201010881439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201011013511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600505506255 + 600505506256.

It is an arithmetic number, because the mean of its divisors is an integer number (600505506256).

Almost surely, 2^{1201011012511} is an apocalyptic number.

1201011012511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201011012511 is an equidigital number, since it uses as much as digits as its factorization.

1201011012511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 1201011012511 its reverse (1152101101021), we get a palindrome (2353112113532).

The spelling of 1201011012511 in words is "one trillion, two hundred one billion, eleven million, twelve thousand, five hundred eleven".