1011332130221 has 12 divisors (see below), whose sum is σ = 1176757959132. Its totient is φ = 866627411328.

The previous prime is 1011332130197. The next prime is 1011332130223. The reversal of 1011332130221 is 1220312331101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 194468652196 + 816863478025 = 440986^2 + 903805^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1011332130221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011332130193 and 1011332130202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011332130223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2534870 + ... + 2906583.

It is an arithmetic number, because the mean of its divisors is an integer number (98063163261).

Almost surely, 2^{1011332130221} is an apocalyptic number.

It is an amenable number.

1011332130221 is a deficient number, since it is larger than the sum of its proper divisors (165425828911).

1011332130221 is an equidigital number, since it uses as much as digits as its factorization.

1011332130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445260 (or 5445253 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1011332130221 its reverse (1220312331101), we get a palindrome (2231644461322).

The spelling of 1011332130221 in words is "one trillion, eleven billion, three hundred thirty-two million, one hundred thirty thousand, two hundred twenty-one".