1011201012 has 18 divisors (see below), whose sum is σ = 2556091538. Its totient is φ = 337066992.

The previous prime is 1011201011. The next prime is 1011201019. The reversal of 1011201012 is 2101021101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 512750736 + 498450276 = 22644^2 + 22326^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1011200985 and 1011201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011201011) 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 5 ways as a sum of consecutive naturals, for example, 14044423 + ... + 14044494.

Almost surely, 2^1011201012 is an apocalyptic number.

1011201012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011201012 is an abundant number, since it is smaller than the sum of its proper divisors (1544890526).

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

1011201012 is a wasteful number, since it uses less digits than its factorization.

1011201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28088927 (or 28088922 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1011201012 is about 31799.3869752233. The cubic root of 1011201012 is about 1003.7198164750.

Adding to 1011201012 its reverse (2101021101), we get a palindrome (3112222113).

The spelling of 1011201012 in words is "one billion, eleven million, two hundred one thousand, twelve".