1200001211011 has 2 divisors, whose sum is σ = 1200001211012. Its totient is φ = 1200001211010.

The previous prime is 1200001210951. The next prime is 1200001211039. The reversal of 1200001211011 is 1101121000021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200001211011 - 2²³ = 1199992822403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200001241011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600000605505 + 600000605506.

It is an arithmetic number, because the mean of its divisors is an integer number (600000605506).

Almost surely, 2^{1200001211011} is an apocalyptic number.

1200001211011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200001211011 is an equidigital number, since it uses as much as digits as its factorization.

1200001211011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1200001211011 its reverse (1101121000021), we get a palindrome (2301122211032).

The spelling of 1200001211011 in words is "one trillion, two hundred billion, one million, two hundred eleven thousand, eleven".