11198921533 has 2 divisors, whose sum is σ = 11198921534. Its totient is φ = 11198921532.

The previous prime is 11198921521. The next prime is 11198921551. The reversal of 11198921533 is 33512989111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9174191524 + 2024730009 = 95782^2 + 44997^2 .

It is a cyclic number.

It is not a de Polignac number, because 11198921533 - 2⁵ = 11198921501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11198921533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11198921033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599460766 + 5599460767.

It is an arithmetic number, because the mean of its divisors is an integer number (5599460767).

Almost surely, 2^11198921533 is an apocalyptic number.

It is an amenable number.

11198921533 is a deficient number, since it is larger than the sum of its proper divisors (1).

11198921533 is an equidigital number, since it uses as much as digits as its factorization.

11198921533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 43.

The spelling of 11198921533 in words is "eleven billion, one hundred ninety-eight million, nine hundred twenty-one thousand, five hundred thirty-three".