1121953501 has 4 divisors (see below), whose sum is σ = 1170734112. Its totient is φ = 1073172892.

The previous prime is 1121953487. The next prime is 1121953513. The reversal of 1121953501 is 1053591211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121953501 - 2¹⁹ = 1121429213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121953501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121953531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24390271 + ... + 24390316.

It is an arithmetic number, because the mean of its divisors is an integer number (292683528).

Almost surely, 2^1121953501 is an apocalyptic number.

It is an amenable number.

1121953501 is a deficient number, since it is larger than the sum of its proper divisors (48780611).

1121953501 is an equidigital number, since it uses as much as digits as its factorization.

1121953501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48780610.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 1121953501 is about 33495.5743494570. The cubic root of 1121953501 is about 1039.1022519584.

The spelling of 1121953501 in words is "one billion, one hundred twenty-one million, nine hundred fifty-three thousand, five hundred one".