1211011011151 has 2 divisors, whose sum is σ = 1211011011152. Its totient is φ = 1211011011150.

The previous prime is 1211011011073. The next prime is 1211011011241. The reversal of 1211011011151 is 1511101101121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211011011151 - 2⁹ = 1211011010639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211011011851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605505505575 + 605505505576.

It is an arithmetic number, because the mean of its divisors is an integer number (605505505576).

Almost surely, 2^{1211011011151} is an apocalyptic number.

1211011011151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211011011151 is an equidigital number, since it uses as much as digits as its factorization.

1211011011151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10, while the sum is 16.

Adding to 1211011011151 its reverse (1511101101121), we get a palindrome (2722112112272).

The spelling of 1211011011151 in words is "one trillion, two hundred eleven billion, eleven million, eleven thousand, one hundred fifty-one".