1012111455 has 16 divisors (see below), whose sum is σ = 1675219680. Its totient is φ = 521179008.

The previous prime is 1012111421. The next prime is 1012111459. The reversal of 1012111455 is 5541112101.

It is not a de Polignac number, because 1012111455 - 2⁶ = 1012111391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1162912 + ... + 1163781.

It is an arithmetic number, because the mean of its divisors is an integer number (104701230).

Almost surely, 2^1012111455 is an apocalyptic number.

1012111455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1012111455 is a deficient number, since it is larger than the sum of its proper divisors (663108225).

1012111455 is a wasteful number, since it uses less digits than its factorization.

1012111455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326730.

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

The square root of 1012111455 is about 31813.6991718976. The cubic root of 1012111455 is about 1004.0209618619.

Adding to 1012111455 its reverse (5541112101), we get a palindrome (6553223556).

The spelling of 1012111455 in words is "one billion, twelve million, one hundred eleven thousand, four hundred fifty-five".