1011455121 has 8 divisors (see below), whose sum is σ = 1348864704. Its totient is φ = 674174480.

The previous prime is 1011455119. The next prime is 1011455147. The reversal of 1011455121 is 1215541101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011455121 - 2¹ = 1011455119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011455161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12141 + ... + 46586.

It is an arithmetic number, because the mean of its divisors is an integer number (168608088).

Almost surely, 2^1011455121 is an apocalyptic number.

It is an amenable number.

1011455121 is a deficient number, since it is larger than the sum of its proper divisors (337409583).

1011455121 is an equidigital number, since it uses as much as digits as its factorization.

1011455121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64471.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1011455121 is about 31803.3822257948. The cubic root of 1011455121 is about 1003.8038857729.

Adding to 1011455121 its reverse (1215541101), we get a palindrome (2226996222).

The spelling of 1011455121 in words is "one billion, eleven million, four hundred fifty-five thousand, one hundred twenty-one".