3011011013221 has 4 divisors (see below), whose sum is σ = 3092389689292. Its totient is φ = 2929632337152.

The previous prime is 3011011013177. The next prime is 3011011013273. The reversal of 3011011013221 is 1223101101103.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2085107120100 + 925903893121 = 1443990^2 + 962239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3011011013221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3011011013195 and 3011011013204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011011013281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40689337980 + ... + 40689338053.

It is an arithmetic number, because the mean of its divisors is an integer number (773097422323).

Almost surely, 2^{3011011013221} is an apocalyptic number.

It is an amenable number.

3011011013221 is a deficient number, since it is larger than the sum of its proper divisors (81378676071).

3011011013221 is an equidigital number, since it uses as much as digits as its factorization.

3011011013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81378676070.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 3011011013221 its reverse (1223101101103), we get a palindrome (4234112114324).

The spelling of 3011011013221 in words is "three trillion, eleven billion, eleven million, thirteen thousand, two hundred twenty-one".