1200101056 has 56 divisors (see below), whose sum is σ = 2969093376. Its totient is φ = 467569920.

The previous prime is 1200101041. The next prime is 1200101083. The reversal of 1200101056 is 6501010021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1200101056² = 2880485089224630272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116836 + ... + 126691.

Almost surely, 2^1200101056 is an apocalyptic number.

1200101056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1200101056 is an abundant number, since it is smaller than the sum of its proper divisors (1768992320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200101056 is a wasteful number, since it uses less digits than its factorization.

1200101056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243557 (or 243547 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1200101056 is about 34642.4747383902. The cubic root of 1200101056 is about 1062.6883983521.

Adding to 1200101056 its reverse (6501010021), we get a palindrome (7701111077).

The spelling of 1200101056 in words is "one billion, two hundred million, one hundred one thousand, fifty-six".