1121536501 has 2 divisors, whose sum is σ = 1121536502. Its totient is φ = 1121536500.

The previous prime is 1121536499. The next prime is 1121536543. The reversal of 1121536501 is 1056351211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1100514276 + 21022225 = 33174^2 + 4585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121536501 - 2¹ = 1121536499 is a prime.

It is a super-3 number, since 3×1121536501³ (a number of 28 digits) contains 333 as substring.

Together with 1121536499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121536561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560768250 + 560768251.

It is an arithmetic number, because the mean of its divisors is an integer number (560768251).

Almost surely, 2^1121536501 is an apocalyptic number.

It is an amenable number.

1121536501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121536501 is an equidigital number, since it uses as much as digits as its factorization.

1121536501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1121536501 is about 33489.3490680246. The cubic root of 1121536501 is about 1038.9735005344.

Adding to 1121536501 its reverse (1056351211), we get a palindrome (2177887712).

The spelling of 1121536501 in words is "one billion, one hundred twenty-one million, five hundred thirty-six thousand, five hundred one".