1012100455 has 32 divisors (see below), whose sum is σ = 1325030400. Its totient is φ = 739619712.

The previous prime is 1012100449. The next prime is 1012100473. The reversal of 1012100455 is 5540012101.

It is a cyclic number.

It is not a de Polignac number, because 1012100455 - 2¹⁷ = 1011969383 is a prime.

It is a super-2 number, since 2×1012100455² = 2048694662022414050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295362 + ... + 298768.

It is an arithmetic number, because the mean of its divisors is an integer number (41407200).

Almost surely, 2^1012100455 is an apocalyptic number.

1012100455 is a deficient number, since it is larger than the sum of its proper divisors (312929945).

1012100455 is a wasteful number, since it uses less digits than its factorization.

1012100455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1012100455 is about 31813.5262899289. The cubic root of 1012100455 is about 1004.0173244922.

Adding to 1012100455 its reverse (5540012101), we get a palindrome (6552112556).

The spelling of 1012100455 in words is "one billion, twelve million, one hundred thousand, four hundred fifty-five".