11000120531 has 2 divisors, whose sum is σ = 11000120532. Its totient is φ = 11000120530.

The previous prime is 11000120491. The next prime is 11000120557. The reversal of 11000120531 is 13502100011.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11000120531 is a prime.

It is a super-2 number, since 2×11000120531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11000120591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500060265 + 5500060266.

It is an arithmetic number, because the mean of its divisors is an integer number (5500060266).

Almost surely, 2^11000120531 is an apocalyptic number.

11000120531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000120531 is an equidigital number, since it uses as much as digits as its factorization.

11000120531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 14.

Adding to 11000120531 its reverse (13502100011), we get a palindrome (24502220542).

The spelling of 11000120531 in words is "eleven billion, one hundred twenty thousand, five hundred thirty-one".