1001122531 has 2 divisors, whose sum is σ = 1001122532. Its totient is φ = 1001122530.

The previous prime is 1001122501. The next prime is 1001122553. The reversal of 1001122531 is 1352211001.

It is a strong prime.

It is an emirp because it is prime and its reverse (1352211001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001122531 - 2²⁵ = 967568099 is a prime.

It is a super-2 number, since 2×1001122531² = 2004492644151691922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1001122501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500561265 + 500561266.

It is an arithmetic number, because the mean of its divisors is an integer number (500561266).

Almost surely, 2^1001122531 is an apocalyptic number.

1001122531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001122531 is an equidigital number, since it uses as much as digits as its factorization.

1001122531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1001122531 is about 31640.5203971110. The cubic root of 1001122531 is about 1000.3740370788.

Adding to 1001122531 its reverse (1352211001), we get a palindrome (2353333532).

The spelling of 1001122531 in words is "one billion, one million, one hundred twenty-two thousand, five hundred thirty-one".